gson对象序列化的示例
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2022-08-07 23:05:48
1.编写核心类mainapp:package com.yiidian.gson;import com.google.gson.gson;import com.google.gson.gsonbuild...
1.编写核心类
mainapp:
package com.yiidian.gson; import com.google.gson.gson; import com.google.gson.gsonbuilder; import java.io.*; public class mainapp { public static void main(string args[]) { mainapp tester = new mainapp(); try { student student = new student(); student.setage(10); student.setname("eric"); tester.writejson(student); student student1 = tester.readjson(); system.out.println(student1); } catch(filenotfoundexception e) { e.printstacktrace(); } catch(ioexception e) { e.printstacktrace(); } } //把java对象存储student.json文件 private void writejson(student student) throws ioexception { gsonbuilder builder = new gsonbuilder(); gson gson = builder.create(); filewriter writer = new filewriter("student.json"); writer.write(gson.tojson(student)); writer.close(); } //从student.json文件读取java对象 private student readjson() throws filenotfoundexception { gsonbuilder builder = new gsonbuilder(); gson gson = builder.create(); bufferedreader bufferedreader = new bufferedreader( new filereader("student.json")); student student = gson.fromjson(bufferedreader, student.class); return student; } } class student { private string name; private int age; public student(){} public string getname() { return name; } public void setname(string name) { this.name = name; } public int getage() { return age; } public void setage(int age) { this.age = age; } public string tostring() { return "student [ name: "+name+", age: "+ age+ " ]"; } }
2 运行测试
控制台输出:
项目下生成student.json文件
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