Spring MVC转换XML数据

ゝ一世哀愁。 2021-07-24 11:35 385阅读 0赞

**一 控制器**

package org.fkit.controller;
    
    import java.io.InputStream;
    import javax.xml.bind.JAXBContext;
    import javax.xml.bind.Unmarshaller;
    import org.fkit.domain.Book;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PostMapping;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    public class BookController {
         
        // @RequestBody Book book会将传递的xml数据自动绑定到Book对象
         @PostMapping(value="/sendxml")  
         public void sendxml(@RequestBody Book book) {  
             System.out.println(book);
             System.out.println("接收XML数据成功");
         }  
         
        // @ResponseBody 会将Book自动转成XML数据返回
         @PostMapping(value="/readxml")
         @ResponseBody
         public Book readXml()throws Exception {
             // 通过JAXBContext的newInstance方法，传递一个class就可以获得一个上下文
             JAXBContext context = JAXBContext.newInstance(Book.class);  
             // 创建一个Unmarshall对象
             Unmarshaller unmar = context.createUnmarshaller();  
             InputStream is = this.getClass().getResourceAsStream("/book.xml");
             // Unmarshal对象的unmarshal方法可以进行xml到Java对象的转换
             Book book = (Book) unmar.unmarshal(is);  
             System.out.println(book);
             return book;
         }  
    
    }

**二 领域模型**

package org.fkit.domain;
    
    import java.io.Serializable;
    
    import javax.xml.bind.annotation.XmlElement;
    import javax.xml.bind.annotation.XmlRootElement;
    
    // @XmlRootElement表示XML文档的根元素
    @XmlRootElement
    public class Book implements Serializable {
    
        private static final long serialVersionUID = 1L;
        
        private Integer id;
        private String name;
        private String author;
    
        public Book() {
            super();
            // TODO Auto-generated constructor stub
        }
    
        public Book(Integer id, String name, String author) {
            super();
            this.id = id;
            this.name = name;
            this.author = author;
        }
        
        public Integer getId() {
            return id;
        }
        // 该属性作为xml的element
        @XmlElement
        public void setId(Integer id) {
            this.id = id;
        }
    
        public String getName() {
            return name;
        }
        @XmlElement
        public void setName(String name) {
            this.name = name;
        }
    
        public String getAuthor() {
            return author;
        }
        @XmlElement
        public void setAuthor(String author) {
            this.author = author;
        }
    
        @Override
        public String toString() {
            return "Book [id=" + id + ", name=" + name + ", author=" + author + "]";
        }
    
    }

**三 视图**

sendxml.jsp

readxml.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html;  charset=UTF-8">
    <title>测试返回XML格式的数据</title>
    <script type="text/javascript"  src="js/jquery-1.11.0.min.js"></script>
    <script type="text/javascript" src="js/json2.js"></script>
    <script type="text/javascript">
    $(document).ready(function(){
         readxml();
    });
    function readxml(){
         $.ajax("${pageContext.request.contextPath}/readxml",// 发送请求的URL字符串。
                    {
                    dataType : "text", // 预期服务器返回的数据类型。
                    type : "POST", //  请求方式 POST或GET
                  async:  true , // 默认设置下，所有请求均为异步请求。如果设置为false，则发送同步请求
                  // 请求成功后的回调函数。
                  success :function(xml){
                          // 获得xml数据的id，name，author
                         var id = $("id", xml).text();
                         var name = $("name", xml).text();
                         var author = $("author", xml).text();
                         var tr  = $("<tr align='center'/>");
                     $("<td/>").html(id).appendTo(tr);
                     $("<td/>").html(name).appendTo(tr);
                     $("<td/>").html(author).appendTo(tr);
                     $("#booktable").append(tr);
                  },
                  // 请求出错时调用的函数
                  error:function(){
                       alert("数据接收失败");
                  }
         });
    }
    </script>
    </head>
    <body>
    <table id="booktable" border="1"  style="border-collapse:  collapse;">
         <tr align="center">
           <th>编号</th>
           <th>书名</th>
           <th>作者</th>
         </tr>
    </table>
    </body>
    </html>

**四 配置文件**

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:p="http://www.springframework.org/schema/p"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
         xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/mvc
            http://www.springframework.org/schema/mvc/spring-mvc.xsd     
            http://www.springframework.org/schema/context
             http://www.springframework.org/schema/context/spring-context.xsd">
            
        
        <context:component-scan base-package="org.fkit.controller"/>
         
        <mvc:annotation-driven/>
         
        <mvc:default-servlet-handler/>
        
         <bean id="viewResolver"
               class="org.springframework.web.servlet.view.InternalResourceViewResolver"
              p:prefix="/WEB-INF/content/" p:suffix=".jsp"/>
       
    </beans>

**五 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/97012d430a17424185963484ef4ccfa9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20210724/55377b4cd75447a599faee12775056a0.png