Document 解析 XML 檔案時, 解析的值總是為 NULL , 解決方法如下:

先把檔案用 StringBuilder 變成字串後, 再作解析就可以

 

import org.springframework.util.ResourceUtils;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.stream.Stream;

public class TestFunc {

        public static void main(String[] args) throws Exception  {
                // TODO Auto-generated method stub
                try {
                        File xmlFile = ResourceUtils.getFile("classpath:ckfinder-config.xml");
                        readMXLFile(xmlFile);
                        
                } catch (FileNotFoundException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
        }
        
        public static void readMXLFile(File xmlFile) throws Exception {
                InputStream is = new FileInputStream(xmlFile);
                StringBuilder contentBuilder = new StringBuilder();
                try (Stream stream = Files.lines(Paths.get(xmlFile.getAbsolutePath()), StandardCharsets.UTF_8)) {
                        stream.forEach(s -> contentBuilder.append(s).append("\n"));
                } catch (IOException e) {
                        e.printStackTrace();
                }
                System.out.println(contentBuilder.toString());

                ByteArrayInputStream bis = new ByteArrayInputStream(contentBuilder.toString().getBytes());

                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
                dbf.setIgnoringComments(true);
                dbf.setIgnoringElementContentWhitespace(true);
                DocumentBuilder db = dbf.newDocumentBuilder();
                Document doc = db.parse(bis);
                // Normalize the XML Structure; It's just too important !!
                doc.getDocumentElement().normalize();
                Node node = doc.getFirstChild();

                if (node != null) {
                        NodeList nodeList = node.getChildNodes();
                        boolean enabled = false;
                        for (int i = 0; i < nodeList.getLength(); ++i) {
                                Node childNode = nodeList.item(i);
                                if (childNode.getNodeName().equals("enabled"))
                                        enabled = Boolean.valueOf(childNode.getTextContent().trim()).booleanValue();
                        }
                }
        }
}

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在 Spring Boot 使用 Freemarker 模板來快速建立客製化的標籤 (taglib) 是非常簡單的事. 作下列幾個步驟即可.

Step 01:  設定一個 Freemarker Template:  /src/main/resources/templates/demo/ftlTagSample.ftl

<body>    

    <div><h2>WELCOME,${userName}</h2></div>

    <div>Title:${userTitle}</div>

</body>

Step 02: 建立 tag 的 class : FtlTemplateTag.java

public class FtlTemplateTag extends TagSupport {

        private static final long serialVersionUID = 1L;
        
        private String fileName = null;
    private String paramsStr = null;
    private String columnsStr = null;
    private ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
    
        public void setFileName(String fileName) {
                this.fileName = fileName;
        }          
        public void setParamsStr(String paramsStr) {
                this.paramsStr = paramsStr;
        }
        public void setColumnsStr(String columnsStr) {
                this.columnsStr = columnsStr;
        }
        /**
         * JSON 字串轉換成 MAP
         * @return
         */
        private Map setParams() {
                Gson gson = new Gson();
                return gson.fromJson(paramsStr, new TypeToken>() {
                }.getType());
        }
        
        private Map setColumns(){
                Locale locale = LocaleContextHolder.getLocale();
                
                messageSource.setBasenames("i18n/messages");
                
                Gson gson = new Gson();
                Map columns = gson.fromJson(columnsStr, new TypeToken>() {}.getType() );
                
                //轉換多語系
                Map dataModel = new LinkedHashMap();
                columns.forEach( (k,v)-> dataModel.put(k, messageSource.getMessage(v, null, v, locale)) );
                        
                return dataModel;
        }
        
        
        @Override
        public int doStartTag() throws JspException {
                JspWriter out = pageContext.getOut();
                
                Configuration conf = new Configuration();
                conf.setClassForTemplateLoading(this.getClass(), "/templates/");
                conf.setDefaultEncoding("UTF-8");
                
                try {
                        Template  tl = conf.getTemplate(fileName);
                        Map dataModel = new HashMap();
                        dataModel.putAll(this.setParams());
                        dataModel.put("columns", this.setColumns());
                        

                        tl.process(dataModel, out);
                        
                } catch (Exception e) {
                        e.printStackTrace();
                }               
                return Tag.SKIP_BODY;
        }
}

Step 03 建立標籤文件 tld:  /src/main/resources/static/tags/polinwei.tld

<?xml version="1.0" encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
        version="2.0">
    <description>Polin WEI Tag Library</description>

    <tlib-version>1.0</tlib-version>
    <short-name>pw</short-name>
    <uri>/polinwei/tags</uri>

    <tag>
        <description>Get the file name of freemarker template</description>
        <name>FtlSampleTemplate</name>
        <tag-class>com.spring.jwt.tablibs.FtlTemplateTag</tag-class>
        <body-content>empty</body-content>
        <attribute>
            <description> Freemarker Template 的檔案</description>
            <name>fileName</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
        <attribute>
            <name>parmsStr</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
        <attribute>
            <name>columnsStr</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
    </tag>
</taglib>

Step 04: 註冊此 tag 

@Configuration
public class MvcConfig implements WebMvcConfigurer {
         @Autowired
         FreeMarkerConfigurer freeMarkerConfigurer;    
    /**
     *  
     *    加入 spring-security-taglibs 對 FreeMarker 的支援
     */
    @PostConstruct    
    public void freeMarkerConfigurer() {
        List tlds = new ArrayList();        
        tlds.add("/static/tags/polinwei.tld");
        TaglibFactory taglibFactory = freeMarkerConfigurer.getTaglibFactory();
        taglibFactory.setClasspathTlds(tlds);
        if(taglibFactory.getObjectWrapper() == null) {
            taglibFactory.setObjectWrapper(freeMarkerConfigurer.getConfiguration().getObjectWrapper());
        }
    }

}

Step 05: 在 FTL or JSP 中使用

<p>測試從模版中讀取信息</p>
<@pw.FtlSampleTemplate fileName="demo/ftlTagSample.ftl" 
    paramsStr="{'Avatar':'polin.jpg','userName':'Polin WEI','userTitle':'MIS'}" />

 

Ref: https://blog.csdn.net/chinoukin/article/details/46683223

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build.gradle

buildscript {
        ext {
                springBootVersion = '2.0.4.RELEASE'
                jjwtVersion = '0.9.0'
                findbugsVersion='3.0.1'
                bootstrapVersion = '3.3.7'
                jqueryVersion = '3.3.1'
                vueVersion ='2.5.13'
                fontawesomeVersion = '5.2.0'
                jspapiVersion = '2.3.3'
        }
        repositories {
                mavenCentral()
        }
        dependencies {
                classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
        }
}

/*
* 在這個段落中你可以聲明使用哪些外掛程式
* apply plugin: 'java' 代表這是一個Java專案,需要使用java外掛程式
* 如果想生成一個 `Intellij IDEA` 的工程,類似的如果要生成
* eclipse工程,就寫 apply plugin: 'eclipse'
* 同樣的我們要學的是Spring Boot,所以應用Spring Boot外掛程式
*/
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

// 在這個段落中你可以聲明編譯後的Jar檔資訊
bootJar {
        baseName = 'myspring'
        group = 'com.polinwei'
        version = '0.0.1-SNAPSHOT'
}

// 在這個段落中你可以聲明原始檔案和目標編譯後的Java版本相容性
sourceCompatibility = 1.8
targetCompatibility = 1.8

// 在這個段落中你可以聲明在哪裡可以找到你的項目依賴
repositories {
        mavenCentral()
        maven { url "https://repo.spring.io/snapshot" }
        maven { url "https://repo.spring.io/milestone" }
        maven { url "https://code.lds.org/nexus/content/groups/main-repo"}
        maven { url "http://maven.aliyun.com/nexus/content/repositories/central"}
}


dependencies {  
        compile("org.springframework.boot:spring-boot-starter-data-jpa")
        compile("org.springframework.boot:spring-boot-starter-thymeleaf")
        compile("org.springframework.boot:spring-boot-starter-freemarker")
        compile("org.springframework.boot:spring-boot-starter-web")
        compile("org.springframework.boot:spring-boot-starter-security")
        compile("org.springframework.security:spring-security-taglibs")
        compile("org.springframework.boot:spring-boot-devtools") // Class 程式有更改時, 自動重啟
        compile("org.hibernate.validator:hibernate-validator") //驗證
        compile("javax.servlet.jsp:javax.servlet.jsp-api:${jspapiVersion}")
        compile("org.springframework.session:spring-session-data-redis")
        compile("org.springframework.boot:spring-boot-starter-data-redis")
        runtime("mysql:mysql-connector-java")
        compileOnly("org.projectlombok:lombok")
        compile("com.maxmind.geoip2:geoip2:2.12.0")
        compile("io.jsonwebtoken:jjwt:${jjwtVersion}")
        compile("com.google.code.findbugs:findbugs:${findbugsVersion}")
        compile("org.webjars:bootstrap:${bootstrapVersion}")
        compile("org.webjars:jquery:${jqueryVersion}")
        compile("org.webjars:vue:${vueVersion}")
        compile("org.webjars:font-awesome:${fontawesomeVersion}")
        compile("org.webjars.bowergithub.lipis:flag-icon-css:3.1.0")
        compileOnly("org.springframework.boot:spring-boot-configuration-processor")
        testCompile("org.springframework.boot:spring-boot-starter-test")
        testCompile("org.springframework.security:spring-security-test")
}

model: Authority.java

/**
 * Authority generated by hbm2java
 */
@Entity
@Table(name = "authority", uniqueConstraints = @UniqueConstraint(columnNames = "name"))
public class Authority implements java.io.Serializable {

        private Long id;
        private String name;
        @Size(min=2, max=30 , message = "{Size}")
        private String description;
        private Set users = new HashSet(0);

        public Authority() {
        }

        public Authority(String name, String description) {
                this.name = name;
                this.description = description;
        }

        public Authority(String name, String description, Set users) {
                this.name = name;
                this.description = description;
                this.users = users;
        }

        @Id
        @GeneratedValue(strategy = IDENTITY)

        @Column(name = "id", unique = true, nullable = false)
        public Long getId() {
                return this.id;
        }

        public void setId(Long id) {
                this.id = id;
        }

        @Column(name = "name", unique = true, nullable = false, length = 50)
        public String getName() {
                return this.name;
        }

        public void setName(String name) {
                this.name = name;
        }

        @Column(name = "description", nullable = false, length = 100)
        public String getDescription() {
                return this.description;
        }

        public void setDescription(String description) {
                this.description = description;
        }

        @ManyToMany(fetch = FetchType.LAZY)
        @JoinTable(name = "user_authority", joinColumns = {
                        @JoinColumn(name = "authority_id", nullable = false, updatable = false) }, inverseJoinColumns = {
                                        @JoinColumn(name = "user_id", nullable = false, updatable = false) })
        @JsonBackReference
        public Set getUsers() {
                return this.users;
        }

        public void setUsers(Set users) {
                this.users = users;
        }

}

Control: AuthorityController.java

@Controller
@RequestMapping(path = "/security")
public class AuthorityController {

        private final Logger logger = LoggerFactory.getLogger(this.getClass());
        
        @Autowired
        private AuthorityRepository authorityRepository;
        
        public void init(Model model) {
                model.addAttribute("programName", "Authority");
        }
        
        @RequestMapping("authority")
        public String crudAuthority(Model model) {
                init(model);
                model.addAttribute("authority", new Authority());
                model.addAttribute("authorityList",authorityRepository.findAll());              
                return "/security/authority";
        }
        
        /**
         * Get Authority Role from id
         * @param model
         * @param id
         * @return
         */
        @RequestMapping(value= {"authorityEdit","authorityEdit/{id}"} , method = RequestMethod.GET)
        public String crudAuthority(Model model, @PathVariable( required = false , name="id") Long id) {
                init(model);
                if (Objects.isNull(id)) {
                        model.addAttribute("authority", new Authority());
                } else {
                        model.addAttribute("authority", authorityRepository.findById(id).get());
                }               
                return "/security/authority";
        }
        
        /**
         * Save Authority Role
         * @param model
         * @param authority
         * @return
         */
        @RequestMapping(value="authorityEdit" , method = RequestMethod.POST)
        public String crudAuthority(Model model, @Valid Authority authority, BindingResult bindingResult) {
                init(model);
                if (bindingResult.hasErrors()) {
                        return "/security/authority";
                }
                        
                authorityRepository.save(authority);
                model.addAttribute("authority", new Authority());
                return "/security/authority";
        }
        
        /**
         * Delete Authority Role
         * @param model
         * @param id
         * @return
         */
        @RequestMapping(value="authorityDelete/{id}" , method = RequestMethod.GET)
        public String authorityDelete(Model model, @PathVariable( required = true, name = "id") Long id) {
                init(model);
                authorityRepository.deleteById(id);
                model.addAttribute("authority", new Authority());
                return "/security/authority";
        }
        
}

加入了@Valid注解 是為了實現JSR-303的驗證。

ftl: authority.ftl

<!-- form id="authorityForm" -->
    <form id="authorityForm" action="/security/authorityEdit" method="post" >
      <input type="hidden" id="authorityId" name="id" value='${authority.id!""}' >
      <div class="box box-danger">
        <div class="box-header with-border">
          <h3 class="box-title"><@spring.message "program.block.manipulate" /></h3>

          <div class="box-tools pull-right">
            <button type="button" class="btn btn-box-tool" data-widget="collapse"><i class="fa fa-minus"></i></button>
            <button type="button" class="btn btn-box-tool" data-widget="remove"><i class="fa fa-remove"></i></button>
          </div>
        </div>
        <!-- /.box-header -->
        <div class="box-body">
          <div class="row">
            <div class="col-md-6">
              <div class="form-group">
                <label for="authorityName"><@spring.message "program.authority.name" /></label>
                <input type="text" class="form-control" id="authorityName" placeholder="<@spring.message "program.authority.name" />" name="name" value='${authority.name!""}' required>
                
              </div>
              <!-- /.form-group -->
              <div class="form-group">                
                <label for="authorityDescription"><@spring.message "program.authority.description" /></label>
                <input type="text" class="form-control" id="authorityDescription" placeholder="<@spring.message "program.authority.description" />" name="description" value='${authority.description!""}' required>
                <#if authority??>  
                    <@spring.bind "authority.description" />
                    <@spring.showErrors "<br />" "color:red"/>
                </#if>
              </div>
              <!-- /.form-group -->
            </div><!-- /.col -->
            
          </div><!-- /.row -->
          <div class="row">
              <div class="col-xs-6">
                  <button id="btn-login" type="submit" class="btn btn-alert "><@spring.message "label.submit"/></button>
              </div>          
          </div> <!-- /.row -->
        </div>
        <!-- /.box-body -->
        <div class="box-footer">
          Visit <a href="/security/authority">Authority</a>
        </div>
      </div>
      <!-- /.box -->
<!-- /.form id="authorityForm" -->

值得一提的是:SpringMVC为FreeMarker提供了支持。

首先要在頁面中引入:<#import "spring.ftl" as spring />,才會有對表單驗證的支援


<div class="form-group">                
    <label for="authorityDescription"><@spring.message "program.authority.description" /></label>
    <input type="text" class="form-control" id="authorityDescription" placeholder="<@spring.message "program.authority.description" />" name="description" value='${authority.description!""}' required>
    <#if authority??>  
        <@spring.bind "authority.description" />
        <@spring.showErrors "<br />" "color:red"/>
    </#if>
</div>

spring.bind 指定要校驗綁定的欄位。格式是: <@spring.bind 屬性名 />
spring.showErrors 指定顯示錯誤消息。格式是:<@spring.showErrors 分隔符號 樣式 />

編寫驗證配置文件: 在src/main/resources 目前下建立 ValidationMessages.properties , ValidationMessages_en_US.properties , ValidationMessages_zh_TW.properties 這三個檔案, 並放入

Size = Size must be between {2} and {1}.

這樣子運行起就可以了有多語言錯誤訊息的顯示了

https://spring.io/guides/gs/validating-form-input/

https://my.oschina.net/mondayer/blog/879425

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實現pdfmake使用中文本體主要就是編譯新的vfs_fonts.js代替原來vfs_fonts.js文檔引入到前端頁面中,為了編譯出新的字體文檔,下列是中文顯示的解決方法,供大家參考:

操作系統:Windows

操作步驟:

1. 安裝node.js

2. 下載pdfmake的源代碼、下載地址https://github.com/bpampuch/pdfmake

3. 在源代碼根目錄下安裝gulp:

打開cmd命令窗口,定位到源代碼根目錄,如:cd V:\pdfmake-master


npm install gulp
npm install -g gulp
npm i -g gulp-cli

執行gulp -v顯示gulp版本號則説明安裝成功

4. 利用gulp打包字體ttf文檔到vfs_fonts.js文檔中

gulp安裝成功後,查看源代碼根目錄下的gulpfile.js,發現gulp編譯還依賴了很多其他的模塊,所以需要一一安裝,沒辦法所以得一一安裝:npm install webpack-stream、npm install gulp-uglify 等等


V:\pdfmake-master>npm i -g gulp-cli

V:\node-v8.12.0-win-x64\gulp -> V:\node-v8.12.0-win-x64\node_modules\gulp-cli\bin\gulp.js

+ gulp-cli@2.0.1

added 235 packages from 147 contributors in 6.71s

V:\pdfmake-master>gulp buildFonts

[13:48:16] Using gulpfile V:\pdfmake-master\gulpfile.js

[13:48:16] Starting 'buildFonts'...

[13:48:17] Finished 'buildFonts' after 382 ms

 

從本地 C:\Windows\Fonts 下拷貝一箇中文本體到D:\download\chrome\pdfmake-master\examples\fonts目錄下,並刪除fonts目錄下原來的ttf文檔,這裏有一個問題,中文本體都很大,囧。

請選了一個最小的字體上:標楷體-標準 ,這一步完成之後,字體打包生成的vfs_fonts.js會覆蓋源代碼根目錄的build目錄下的vfs_fonts.js文檔,這時需要將vfs_fonts.js拷貝到你的項目當中替換原來的vfs_fonts.js,並引用的html頁面中

 

以 DataTables 為例

<button onclick="down('pdf文件中文顯示')">PDF下載</button>

      <!-- SELECT2 EXAMPLE -->
      <div class="box box-danger">
        <div class="box-header with-border">
          <h3 class="box-title">維護畫面</h3>

          <div class="box-tools pull-right">
            <button type="button" class="btn btn-box-tool" data-widget="collapse"><i class="fa fa-minus"></i></button>
            <button type="button" class="btn btn-box-tool" data-widget="remove"><i class="fa fa-remove"></i></button>
          </div>
        </div>
        <!-- /.box-header -->
        <div class="box-body">
          <div class="row">
            <div class="col-md-6">
              <div class="form-group">
                <label for="authorityName">Name</label>
                <input type="text" class="form-control" id="authorityName" placeholder="Authority Name" name="name">
                
              </div>
              <!-- /.form-group -->
              <div class="form-group">                
                <label for="authorityDescription">description</label>
                <input type="text" class="form-control" id="authorityDescription" placeholder="Authority Description" name="description">
              </div>
              <!-- /.form-group -->
            </div><!-- /.col -->
            
          </div><!-- /.row -->
        </div>
        <!-- /.box-body -->
        <div class="box-footer">
          Visit <a href="/security/authority">Authority</a>
        </div>
      </div>
      <!-- /.box -->


      <!-- Default box -->
      <div class="box box-info">
        <div class="box-header">
          <h3 class="box-title">角色清單</h3>

          <div class="box-tools pull-right">
            <button type="button" class="btn btn-box-tool" data-widget="collapse" data-toggle="tooltip"
                    title="Collapse">
              <i class="fa fa-minus"></i></button>
            <button type="button" class="btn btn-box-tool" data-widget="remove" data-toggle="tooltip" title="Remove">
              <i class="fa fa-times"></i></button>
          </div>
        </div>
        <div class="box-body">
         
          <table id="tblAuthority" class="table table-bordered table-striped" style="width:100%">
            <thead>
            <tr>
              <th>id</th>
              <th>name</th>
              <th>description</th>
              <th>Options</th>
            </tr>
            </thead>
            
            <tfoot>
            <tr>
              <th>id</th>
              <th>name</th>
              <th>description</th>
              <th>Options</th>
            </tr>
            </tfoot>
          </table>
                                             
        </div>
        <!-- /.box-body -->
        <div class="box-footer">
          Footer
        </div>
        <!-- /.box-footer-->
      </div>
      <!-- /.box -->

<!-- page script -->
<script>
function down(data) {
    var dd = {
        content: [
            data,
            'Another paragraph, this time a little bit longer to make sure, this line will be divided into at least two lines'
        ],
        defaultStyle: {
            font: 'kaiu'
        }
    };
    pdfMake.fonts = {
                kaiu: {
            normal: 'kaiu.ttf',
            bold: 'kaiu.ttf',
            italics: 'kaiu.ttf',
            bolditalics: 'kaiu.ttf'
        }
    };
    pdfMake.createPdf(dd).download();
}

$(document).ready(function() {
        
        pdfMake.fonts = {
                Roboto: {
            normal: 'kaiu.ttf',
            bold: 'kaiu.ttf',
            italics: 'kaiu.ttf',
            bolditalics: 'kaiu.ttf'
        }
    };  
        
          $('#tblAuthority').DataTable({        
        ajax: {url:"/authentication/authorities",dataSrc:""},
        columns: [
                { data: "id", visible: false},
            { data: "name" },
            { data: "description" },
            {
              data: "id", render: function(data, type, row, meta) {                  
                  return '<a href=' data ' class="btn btn-xs btn-primary"><i class="fa fa-pencil"></i>Edit</a> <a href=' data ' class="btn btn-xs btn-danger"><i class="fa fa-trash-o">Delete</a>'
              },
              className: "center",              
            }
        ],
        dom: 'lrBtip',        
        buttons: [
                'copy','excel', 
                {
                        extend: 'pdf',
                        text: 'PDF',
                        className: "btn btn-xs btn-primary",
                        'title': 'Authority List',                 
                'download': 'open',//直接在視窗開啟 
                },
                {
                extend: 'csv',
                text: 'CSV',
                className: "btn btn-xs btn-primary",
                bom : true
            }, 
            {
                text: 'My button',
                className: "btn btn-xs btn-primary",
                action: function ( e, dt, node, config ) {
                    alert( 'Button activated' );
                }
            },
            {
                text: 'Reload',
                className: "btn btn-xs btn-primary",
                action: function ( e, dt, node, config ) {
                    dt.ajax.reload();
                }
            }            
        ]
        
    });   

  })
</script>

https://hk.saowen.com/a/b58fede7fdfaef23bb9236286cc6ac318607f9f6899fd684c6d2af2509a4be3f

https://blog.csdn.net/qq_30076899/article/details/79731508

https://github.com/bpampuch/pdfmake/wiki/Custom-Fonts---client-side

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使用 Hibernate Tool 去產生 Domain Code ( Model ) 時, 當 User.java & Authority.java 有相互參考時, 在 spring boot 使用 @RestController 會發生 Direct self-reference leading to cycle 的錯誤訊息, 解決的方法可以在 Domain Code ( Model ) 上加上 @JsonManagedReference & @JsonBackReference 來防止錯誤.

 

User.java

/**
 * User generated by hbm2java
 */
@Entity
@Table(name = "user")
public class User implements java.io.Serializable {

        private Long id;
        private User userByCreateUser;
        private User userByUpdateUser;
        private String username;
        private String password;
        private String firstname;
        private String lastname;
        private String email;
        private Boolean enabled;
        private Date lastpasswordresetdate;
        private Date activeDate;
        private Date inactiveDate;
        private Date createDate;
        private Date updateDate;
        private Set authorities = new HashSet(0);
        private Set usersForCreateUser = new HashSet(0);
        private Set usersForUpdateUser = new HashSet(0);

        public User() {
        }

        public User(String username, String password, String firstname, String lastname, String email,
                        Date lastpasswordresetdate) {
                this.username = username;
                this.password = password;
                this.firstname = firstname;
                this.lastname = lastname;
                this.email = email;
                this.lastpasswordresetdate = lastpasswordresetdate;
        }

        public User(User userByCreateUser, User userByUpdateUser, String username, String password, String firstname,
                        String lastname, String email, Boolean enabled, Date lastpasswordresetdate, Date activeDate,
                        Date inactiveDate, Date createDate, Date updateDate, Set authorities,
                        Set usersForCreateUser, Set usersForUpdateUser) {
                this.userByCreateUser = userByCreateUser;
                this.userByUpdateUser = userByUpdateUser;
                this.username = username;
                this.password = password;
                this.firstname = firstname;
                this.lastname = lastname;
                this.email = email;
                this.enabled = enabled;
                this.lastpasswordresetdate = lastpasswordresetdate;
                this.activeDate = activeDate;
                this.inactiveDate = inactiveDate;
                this.createDate = createDate;
                this.updateDate = updateDate;
                this.authorities = authorities;
                this.usersForCreateUser = usersForCreateUser;
                this.usersForUpdateUser = usersForUpdateUser;
        }

        @Id
        @GeneratedValue(strategy = IDENTITY)

        @Column(name = "id", unique = true, nullable = false)
        public Long getId() {
                return this.id;
        }

        public void setId(Long id) {
                this.id = id;
        }

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "create_user")
        public User getUserByCreateUser() {
                return this.userByCreateUser;
        }

        public void setUserByCreateUser(User userByCreateUser) {
                this.userByCreateUser = userByCreateUser;
        }

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "update_user")
        public User getUserByUpdateUser() {
                return this.userByUpdateUser;
        }

        public void setUserByUpdateUser(User userByUpdateUser) {
                this.userByUpdateUser = userByUpdateUser;
        }

        @Column(name = "username", nullable = false, length = 50)
        public String getUsername() {
                return this.username;
        }

        public void setUsername(String username) {
                this.username = username;
        }

        @Column(name = "password", nullable = false, length = 100)
        public String getPassword() {
                return this.password;
        }

        public void setPassword(String password) {
                this.password = password;
        }

        @Column(name = "firstname", nullable = false, length = 50)
        public String getFirstname() {
                return this.firstname;
        }

        public void setFirstname(String firstname) {
                this.firstname = firstname;
        }

        @Column(name = "lastname", nullable = false, length = 50)
        public String getLastname() {
                return this.lastname;
        }

        public void setLastname(String lastname) {
                this.lastname = lastname;
        }

        @Column(name = "email", nullable = false, length = 50)
        public String getEmail() {
                return this.email;
        }

        public void setEmail(String email) {
                this.email = email;
        }

        @Column(name = "enabled")
        public Boolean getEnabled() {
                return this.enabled;
        }

        public void setEnabled(Boolean enabled) {
                this.enabled = enabled;
        }

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name = "lastpasswordresetdate", nullable = false, length = 19)
        public Date getLastpasswordresetdate() {
                return this.lastpasswordresetdate;
        }

        public void setLastpasswordresetdate(Date lastpasswordresetdate) {
                this.lastpasswordresetdate = lastpasswordresetdate;
        }

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name = "active_date", length = 19)
        public Date getActiveDate() {
                return this.activeDate;
        }

        public void setActiveDate(Date activeDate) {
                this.activeDate = activeDate;
        }

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name = "inactive_date", length = 19)
        public Date getInactiveDate() {
                return this.inactiveDate;
        }

        public void setInactiveDate(Date inactiveDate) {
                this.inactiveDate = inactiveDate;
        }

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name = "create_date", length = 19)
        public Date getCreateDate() {
                return this.createDate;
        }

        public void setCreateDate(Date createDate) {
                this.createDate = createDate;
        }

        @Temporal(TemporalType.TIMESTAMP)
        @Column(name = "update_date", length = 19)
        public Date getUpdateDate() {
                return this.updateDate;
        }

        public void setUpdateDate(Date updateDate) {
                this.updateDate = updateDate;
        }

        @ManyToMany(fetch = FetchType.LAZY)
        @JoinTable(name = "user_authority", catalog = "my_spring", joinColumns = {
                        @JoinColumn(name = "user_id", nullable = false, updatable = false) }, inverseJoinColumns = {
                                        @JoinColumn(name = "authority_id", nullable = false, updatable = false) })
        @JsonManagedReference
        public Set getAuthorities() {
                return this.authorities;
        }

        public void setAuthorities(Set authorities) {
                this.authorities = authorities;
        }

        @OneToMany(fetch = FetchType.LAZY, mappedBy = "userByCreateUser")
        public Set getUsersForCreateUser() {
                return this.usersForCreateUser;
        }

        public void setUsersForCreateUser(Set usersForCreateUser) {
                this.usersForCreateUser = usersForCreateUser;
        }

        @OneToMany(fetch = FetchType.LAZY, mappedBy = "userByUpdateUser")
        public Set getUsersForUpdateUser() {
                return this.usersForUpdateUser;
        }

        public void setUsersForUpdateUser(Set usersForUpdateUser) {
                this.usersForUpdateUser = usersForUpdateUser;
        }

}

 

Authority.java

/**
 * Authority generated by hbm2java
 */
@Entity
@Table(name = "authority")
public class Authority implements java.io.Serializable {

        private Long id;
        private String name;
        private String description;
        private Set users = new HashSet(0);

        public Authority() {
        }

        public Authority(String name, String description) {
                this.name = name;
                this.description = description;
        }

        public Authority(String name, String description, Set users) {
                this.name = name;
                this.description = description;
                this.users = users;
        }

        @Id
        @GeneratedValue(strategy = IDENTITY)

        @Column(name = "id", unique = true, nullable = false)
        public Long getId() {
                return this.id;
        }

        public void setId(Long id) {
                this.id = id;
        }

        @Column(name = "name", nullable = false, length = 50)
        public String getName() {
                return this.name;
        }

        public void setName(String name) {
                this.name = name;
        }

        @Column(name = "description", nullable = false, length = 100)
        public String getDescription() {
                return this.description;
        }

        public void setDescription(String description) {
                this.description = description;
        }

        @ManyToMany(fetch = FetchType.LAZY)
        @JoinTable(name = "user_authority", catalog = "my_spring", joinColumns = {
                        @JoinColumn(name = "authority_id", nullable = false, updatable = false) }, inverseJoinColumns = {
                                        @JoinColumn(name = "user_id", nullable = false, updatable = false) })
         @JsonBackReference
        public Set getUsers() {
                return this.users;
        }

        public void setUsers(Set users) {
                this.users = users;
        }
}

 

 

 

參考:

http://keenformatics.blogspot.com/2013/08/how-to-solve-json-infinite-recursion.html

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SpringBoot+SpringSecurity+Freemarker專案中在頁面上使用security標籤控制按鈕顯示隱藏達到對按鈕級許可權控制還是比較方便的,如下配置即可。


1. gradle 引入依賴


dependencies {
        compile("org.springframework.security:spring-security-taglibs")
        compile("javax.servlet.jsp:javax.servlet.jsp-api:2.3.3")
}


2. 依賴引入後到spring-security-taglibs包中META-INF下security.tld複製出來,放到/resources/static下,最後建一個目錄tags,如下:

springboot-taglib.jpg
3. 建一個配置類


@Configuration
public class MvcConfig implements WebMvcConfigurer {
         @Autowired
         FreeMarkerConfigurer freeMarkerConfigurer;
    
    /**
     *  
     *    加入 spring-security-taglibs 對 FreeMarker 的支援
     */
    @PostConstruct
    public void freeMarkerConfigurer() {
        List tlds = new ArrayList();
        tlds.add("/static/tags/security.tld");
        TaglibFactory taglibFactory = freeMarkerConfigurer.getTaglibFactory();
        taglibFactory.setClasspathTlds(tlds);
        if(taglibFactory.getObjectWrapper() == null) {
            taglibFactory.setObjectWrapper(freeMarkerConfigurer.getConfiguration().getObjectWrapper());
        }
    }
}


4. 在freemarker頁面頂部引入標籤


<#assign security=JspTaglibs["http://www.springframework.org/security/tags"] />


5. 標籤應用如下


<@security.authorize access="hasRole('ADMIN')">

Admin can read
</@security.authorize>

<@security.authorize access="hasRole('USER')">

User can read
</@security.authorize>
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除了 痞客邦 PIXNET 使用 Syntax Highlighter 顯示程式碼 以外, 也可以使用 highlight.js 來讓 pixnet 顯示程式碼

在後台管理的 側欄管理, 選擇 頁尾描述加入

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/>
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/languages/go.min.js"></script>
<script>hljs.initHighlightingOnLoad();</script>


日後要展示程式碼的部分,先在撰寫貼上程式碼,轉到原始碼模式,用

<pre><code class="html">...</code></pre>

把程式碼包起來。

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Spring Boot + Freemarker 多語言國際化的作法

1. 在 application.properties 增加

# ===============================
# Multi Language
# ===============================
spring.messages.basename=i18n/messages

# 為了取得當前頁面的URL (get current page url)
spring.freemarker.expose-spring-macro-helpers=true

2. 在 resource 目錄下建立一個目錄 i18n , 並新增三個檔

messages.properties , messages_zh_TW.properties , 內容為

label.login =  登入

messages_en_US.properties 內容為

label.login =  Login

3. 建立 WebMvcConfig : MvcConfig.class

@Configuration
public class MvcConfig implements WebMvcConfigurer {    
    //多語系設定
    @Bean(name = "localeResolver")
    public LocaleResolver getLocaleResolver()  {
        CookieLocaleResolver resolver= new CookieLocaleResolver();
        resolver.setCookieDomain("jwtLocaleCookie");
        // 60 minutes 
        resolver.setCookieMaxAge(60*60); 
        return resolver;
    } 
    //多語系設定 語系切換偵測
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        LocaleChangeInterceptor localeInterceptor = new LocaleChangeInterceptor();
        localeInterceptor.setParamName("lang");
                  
        registry.addInterceptor(localeInterceptor).addPathPatterns("/*");
    }

}

4. Control file: MainController.class

@Controller
public class MainController {
        
        @RequestMapping(value = { "/","/home" })
    public String staticResource(Model model) {
        return "home";
    }

}

5. View: home.ftl

<#import "/spring.ftl" as spring/>





注意, FTL的第一行要 import "/spring.ftl" ,這樣子就可以輕鬆切換語系了

 

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使用 Hibernate Tool 產生 Model 時, FetchType 預設是 FetchType.LAZY , 但在執行時, 卻常會產生類似下列 no Session 的錯誤訊息

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.spring.jwt.db.maria.model.authentication.User.userAuthorities, could not initialize proxy - no Session

 

這時候需要在 Method 前加入 @Transactional 就可以解決

@Test
@Transactional
public void testUserAuthority() {
        User user = userRepository.findById(1L).get();
        JwtUser jwtUser = JwtUserFactory.create(user);
        logger.info(jwtUser.getUsername());
        
}

Ref: http://javasampleapproach.com/hibernate/use-hibernate-lazy-fetch-eager-fetch-type-spring-boot-mysql

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使用 Spring Boot 2 建置系統就是希望快速. 若專案範圍小的話, 資料庫倒是可以考慮使用 H2 database 來建罝

在 build.gradle 上加入

compile('com.h2database:h2')

然後編輯 application.properties

server.port=8088
# ===============================
# H2
# ===============================
spring.h2.console.enabled=true
spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
這樣就可以登入 http://localhost:8088/h2-console 操作了
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