不同实体转json教程：通过Gson把json转化为不同类型的实体

gsonutils.java

/**
 * created by yuanopen on 2018/7/14/014.
 */

public class gsonutils {

 private static gson gsonutilsgson = new gson();

 /**
  * @fun 根据不同类型进行json到实体间的转化
  * @param jsonstring json字符串
  * @param cls 需要转化的类型
  * @param  需要转化的类型
  * @return 返回实体对象
  */
 public static   t josntomodule(string jsonstring, class cls) {
 t list ;
list=gsonutilsgson.fromjson(jsonstring,cls);
  return list;
 }

 /**
  * @fun 根据不同类型进行实体到json间的转化
  * @param cls 需要转化的类型
  * @param  需要转化的类型
  * @return 返回json字符串
  */
 public static   string  moduletojosn(t cls) {
  return  gsonutilsgson.tojson(cls);
 }
}

实体：

entityone.java:

/**
 * created by yuanopen on 2018/7/14/014.
 */

public class entityone {
 private int id;
 private string name;

 public int getid() {
  return id;
 }

 public void setid(int id) {
  this.id = id;
 }

 public string getname() {
  return name;
 }

 public void setname(string name) {
  this.name = name;
 }

 @override
 public string tostring() {
  return "id:"+id+"  name:"+name;
 }
}

entitysecond.java:

/**
 * created by yuanopen on 2018/7/14/014.
 */

public class entitysecond {
 private int id;
 private string name;

 public int getid() {
  return id;
 }

 public void setid(int id) {
  this.id = id;
 }

 public string getname() {
  return name;
 }

 public void setname(string name) {
  this.name = name;
 }

 @override
 public string tostring() {
  return "id:"+id+"  name:"+name;
 }
}

 

测试：

public static void main(string[] args) {

  entityone one=new entityone();
  one.setid(1);
  one.setname("张三");
  //moduletojson
  string onejson=moduletojosn(one);
  system.out.println(onejson);
  //jsontomudule
  entityone one1=  josntomodule(onejson,entityone.class);
  system.out.println(one1.tostring());

  entitysecond second=new entitysecond();
  second.setid(2);
  second.setname("李四");
  //moduletojson
  string secondjson=moduletojosn(second);
  system.out.println(secondjson);
  //jsontomudule
  entitysecond second1=  josntomodule(secondjson,entitysecond.class);
  system.out.println(second1.tostring());
 }

结果：