jsonObject关于xml,json,bean之间的转换关系-白红宇

1.json转换为JAVA

@Test        public void jsonToJAVA() {            System.out.println("json字符串转java代码");            String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}";//添加转义字符            JSONObject jsonObj = JSONObject.fromObject(jsonStr);            String username = jsonObj.getString("username");            String password = jsonObj.optString("password");            System.out.println("json--->java\n username=" + username                    + "\t password=" + password);        }

运行结果:

json字符串转java代码json--->java username=张三     password=

2.java转换为JSON

@Test        public void javaToJSON() {            System.out.println("java代码封装为json字符串");            JSONObject jsonObj = new JSONObject();            jsonObj.put("username", "张三");            jsonObj.put("password", "");            System.out.println("java--->json \n" + jsonObj.toString());        }

运行结果:

java代码封装为json字符串java--->json {
    "username":"张三","password":""}

3.json转换为XML

@Test        public void jsonToXML() {            System.out.println("json字符串转xml字符串");            String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}";            JSONObject json = JSONObject.fromObject(jsonStr);            XMLSerializer xmlSerializer = new XMLSerializer();            xmlSerializer.setRootName("user_info");            xmlSerializer.setTypeHintsEnabled(false);            String xml = xmlSerializer.write(json);            System.out.println("json--->xml \n" + xml);        }

运行结果:

json字符串转xml字符串json--->xml 
     
     
      
      
       张三

4.XML转换为JSON

@Test        public void xmlToJSON() {            System.out.println("xml字符串转json字符串");            String xml = "
     
     
      
      
       张三
      
     ";            XMLSerializer xmlSerializer = new XMLSerializer();            JSON json = xmlSerializer.read(xml);            System.out.println("xml--->json \n" + json.toString());        }

运行结果:

xml字符串转json字符串五月 20, 2017 9:20:18 下午 net.sf.json.xml.XMLSerializer getType信息: Using default type stringxml--->json {
    "password":[],"username":"张三"}

5.javaBean转换为JSON

@Test        public void javaBeanToJSON() {            System.out.println("javabean转json字符串");            UserInfo userInfo = new UserInfo();            userInfo.setUsername("张三");            userInfo.setPassword("");            JSONObject json = JSONObject.fromObject(userInfo);            System.out.println("javabean--->json \n" + json.toString());        }

运行结果：

javabean转json字符串javabean--->json {
    "password":"","username":"张三"}

6.javaBean转换为XML

@Test        public void javaBeanToXML() {            System.out.println("javabean转xml字符串");            UserInfo userInfo = new UserInfo();            userInfo.setUsername("张三");            userInfo.setPassword("");            JSONObject json = JSONObject.fromObject(userInfo);            XMLSerializer xmlSerializer = new XMLSerializer();            String xml = xmlSerializer.write(json, "UTF-8");            System.out.println("javabean--->xml \n" + xml);        }

运行结果:

javabean转xml字符串javabean--->xml 
     
     
      
      
       张三

贴上全部代码：

package org.xiaowu.json.demo;import org.junit.Test;import net.sf.json.JSON;import net.sf.json.JSONObject;import net.sf.json.xml.XMLSerializer;public class JsonObjectDemo {        @Test        public void jsonToJAVA() {            System.out.println("json字符串转java代码");            String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}";            JSONObject jsonObj = JSONObject.fromObject(jsonStr);            String username = jsonObj.getString("username");            String password = jsonObj.optString("password");            System.out.println("json--->java\n username=" + username                    + "\t password=" + password);        }                                @Test        public void javaToJSON() {            System.out.println("java代码封装为json字符串");            JSONObject jsonObj = new JSONObject();            jsonObj.put("username", "张三");            jsonObj.put("password", "");            System.out.println("java--->json \n" + jsonObj.toString());        }                                @Test        public void jsonToXML() {            System.out.println("json字符串转xml字符串");            String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}";            JSONObject json = JSONObject.fromObject(jsonStr);            XMLSerializer xmlSerializer = new XMLSerializer();            xmlSerializer.setRootName("user_info");            xmlSerializer.setTypeHintsEnabled(false);            String xml = xmlSerializer.write(json);            System.out.println("json--->xml \n" + xml);        }                                @Test        public void xmlToJSON() {            System.out.println("xml字符串转json字符串");            String xml = "
     
     
      
      
       张三
      
     ";            XMLSerializer xmlSerializer = new XMLSerializer();            JSON json = xmlSerializer.read(xml);            System.out.println("xml--->json \n" + json.toString());        }                                @Test        public void javaBeanToJSON() {            System.out.println("javabean转json字符串");            UserInfo userInfo = new UserInfo();            userInfo.setUsername("张三");            userInfo.setPassword("");            JSONObject json = JSONObject.fromObject(userInfo);            System.out.println("javabean--->json \n" + json.toString());        }                                        @Test        public void javaBeanToXML() {            System.out.println("javabean转xml字符串");            UserInfo userInfo = new UserInfo();            userInfo.setUsername("张三");            userInfo.setPassword("");            JSONObject json = JSONObject.fromObject(userInfo);            XMLSerializer xmlSerializer = new XMLSerializer();            String xml = xmlSerializer.write(json, "UTF-8");            System.out.println("javabean--->xml \n" + xml);        }}

package org.xiaowu.json.demo;public class UserInfo {    public String username;    public String password;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }}

以及项目所必须导入的jar包，注意版本信息