public static 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()); }
question3：json格式的字符串怎么转换为xml格式的字符串？
public static void jsonToXML() { System.out.println("json字符串转xml字符串"); String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}"; JSONObject json = JSONObject.fromString(jsonStr); XMLSerializer xmlSerializer = new XMLSerializer(); xmlSerializer.setRootName("user_info"); xmlSerializer.setTypeHintsEnabled(false); String xml = xmlSerializer.write(json); System.out.println("json--->xml \n" + xml); }
question4：xml格式的字符串怎么转换为json格式的字符串？
public static void xmlToJSON(){ System.out.println("xml字符串转json字符串"); String xml = "<?xml version=\".\" encoding=\"UTF-\"?><user_info><password></password><username>张三</username></user_info>"; JSON json=XMLSerializer.read(xml); System.out.println("xml--->json \n"+json.toString()); }
question5：javabean怎么转换为json字符串？
public static void javaBeanToJSON() { System.out.println("javabean转json字符串"); UserInfo userInfo = new UserInfo(); userInfo.setUsername("张三"); userInfo.setPassword(""); JSONObject json = JSONObject.fromBean(userInfo); System.out.println("javabean--->json \n" + json.toString()); }
question6：javabean怎么转换为xml字符串？
public static void javaBeanToXML() { System.out.println("javabean转xml字符串"); UserInfo userInfo = new UserInfo(); userInfo.setUsername("张三"); userInfo.setPassword(""); JSONObject json = JSONObject.fromBean(userInfo); XMLSerializer xmlSerializer = new XMLSerializer(); String xml = xmlSerializer.write(json, "UTF-"); System.out.println("javabean--->xml \n" + xml); }
完整的JSONObject_1_3.java代码如下：
JSONObject_1_3 package json; import net.sf.json.JSON; import net.sf.json.JSONObject; import net.sf.json.xml.XMLSerializer; public class JSONObject__ { public static 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()); } public static void jsonToJAVA() { System.out.println("json字符串转java代码"); String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}"; JSONObject jsonObj = JSONObject.fromString(jsonStr); String username = jsonObj.getString("username"); String password = jsonObj.optString("password"); System.out.println("json--->java\n username=" + username + "\t password=" + password); } public static void jsonToXML() { System.out.println("json字符串转xml字符串"); String jsonStr = "{\"password\":\"\",\"username\":\"张三\"}"; JSONObject json = JSONObject.fromString(jsonStr); XMLSerializer xmlSerializer = new XMLSerializer(); xmlSerializer.setRootName("user_info"); xmlSerializer.setTypeHintsEnabled(false); String xml = xmlSerializer.write(json); System.out.println("json--->xml \n" + xml); } public static void javaBeanToJSON() { System.out.println("javabean转json字符串"); UserInfo userInfo = new UserInfo(); userInfo.setUsername("张三"); userInfo.setPassword(""); JSONObject json = JSONObject.fromBean(userInfo); System.out.println("javabean--->json \n" + json.toString()); } public static void javaBeanToXML() { System.out.println("javabean转xml字符串"); UserInfo userInfo = new UserInfo(); userInfo.setUsername("张三"); userInfo.setPassword(""); JSONObject json = JSONObject.fromBean(userInfo); XMLSerializer xmlSerializer = new XMLSerializer(); String xml = xmlSerializer.write(json, "UTF-"); System.out.println("javabean--->xml \n" + xml); } public static void xmlToJSON(){ System.out.println("xml字符串转json字符串"); String xml = "<?xml version=\".\" encoding=\"UTF-\"?><user_info><password></password><username>张三</username></user_info>"; JSON json=XMLSerializer.read(xml); System.out.println("xml--->json \n"+json.toString()); } public static void main(String args[]) { // javaToJSON(); // jsonToJAVA(); // jsonToXML(); // javaBeanToJSON(); // javaBeanToXML(); xmlToJSON(); } }
完整的UserInfo.java代码如下：