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阿里巴巴fastjson的使用

来源:互联网 作者:佚名 时间:2015-07-26 19:26
阿里巴巴fastjson的使用 一、项目结构 一个学生类,其中学生类中可以包含Course类对象 二、数据对象转化为Json字符串 GenerateJ

阿里巴巴fastjson的使用 一、项目结构

这里写图片描述

一个学生类,其中学生类中可以包含Course类对象

二、数据对象转化为Json字符串

GenerateJson.java代码标识转化为json字符串
(1)将学生对象转化为json,其中学生中包含Course对象

@Test (){ Student stu = new Student("xuliugen", "nan", "123123", "100"); Course course = new Course("JAVA", "xiaobin", "100"); stu.setCourse(course); String json = JSON.toJSONString(stu); System.out.println(json); } { "course":{ "coursename":"JAVA", "coursescore":"100", "courseteacher":"xiaobin" }, "password":"123123", "score":"100", "sex":"nan", "username":"xuliugen" }

(2)将一个单独的实体对象转化为json

@Test (){ JSONTest jt1 = new JSONTest("xuliugen", "nan"); JSONTest jt2 = new JSONTest("xieyan", "nv"); List<JSONTest> li = new ArrayList<JSONTest>(); li.add(jt1); li.add(jt2); String jsonstr = JSON.toJSONString(li); System.out.println(jsonstr); } [{"name":"xuliugen","sex":"nan"},{"name":"xieyan","sex":"nv"}]

(3)将包含多个类似于(1)中的实体对象转化为json

@Test (){ Student stu = new Student("xuliugen", "nan", "123123", "100"); Course course = new Course("JAVA", "xiaobin", "100"); stu.setCourse(course); Student stu2 = new Student("xieyan", "nan", "123123", "100"); Course course2 = new Course("music", "qwe", "100"); stu2.setCourse(course2); List<Student> stuList = new ArrayList<Student>(); stuList.add(stu); stuList.add(stu2); String json2 = JSON.toJSONString(stuList); System.out.println(json2); }
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  • [ { "course":{ "coursename":"JAVA", "coursescore":"100", "courseteacher":"xiaobin" }, "password":"123123", "score":"100", "sex":"nan", "username":"xuliugen" }, { "course":{ "coursename":"music", "coursescore":"100", "courseteacher":"qwe" }, "password":"123123", "score":"100", "sex":"nan", "username":"xieyan" } ] 三、解析json数据到实体对象

    (1)解析上述(1)中学生中包含Course的对象

    [{"name":"xuliugen","sex":"nan"},{"name":"xieyan","sex":"nv"}]
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  • @Test public void testParseSimpleJSON(){ String json = "namename"; JSONArray jsonArray = JSON.parseArray(json); String str = jsonArray.getString(0); JSONTest jsonTest = JSON.parseObject(str,JSONTest.class); System.out.println(jsonTest.getSex()); } { "course":{ "coursename":"JAVA", "coursescore":"100", "courseteacher":"xiaobin" }, "password":"123123", "score":"100", "sex":"nan", "username":"xuliugen" }

    (2)由于只有一个对象,,解析如下:

    @Test public void testParseStudentIncludeCourseJSON() { String json = "coursename"; Student stu = JSON.parseObject(json,Student.class); System.out.println(stu.getPassword()); }

    (3)将上述中的(3)当有多个上述的对象的时候,解析如下:

    [ { "course":{ "coursename":"JAVA", "coursescore":"100", "courseteacher":"xiaobin" }, "password":"123123", "score":"100", "sex":"nan", "username":"xuliugen" }, { "course":{ "coursename":"music", "coursescore":"100", "courseteacher":"qwe" }, "password":"123123", "score":"100", "sex":"nan", "username":"xieyan" } ]
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