fastjson的常用方法

/** ????* 解析对象形式的json字符串 ????*/ ???public static void test1() { ???????String jsonStr = "{\"JACKIE_ZHANG\":\"张学友\",\"ANDY_LAU\":\"刘德华\",\"LIMING\":\"黎明\",\"Aaron_Kwok\":\"郭富城\"}"; ???????JSONObject jsonObject = JSONObject.parseObject(jsonStr); ???????System.out.println(jsonObject.get("JACKIE_ZHANG")); ???????System.out.println(jsonObject.get("ANDY_LAU")); ???????System.out.println(jsonObject.get("LIMING")); ???????System.out.println(jsonObject.get("Aaron_Kwok")); ???} ???/** ????* 解析集合形式的json字符串 ????*/ ???public static void test2() { ???????String jsonStr = "[{\"JACKIE_ZHANG\":\"张学友\"},{\"ANDY_LAU\":\"刘德华\"},{\"LIMING\":\"黎明\"},{\"Aaron_Kwok\":\"郭富城\"}]"; ???????JSONArray jsonArray = JSONArray.parseArray(jsonStr); ???????JSONObject jsonObject = JSONObject.parseObject(jsonArray.get(0)+""); ???????System.out.println(jsonObject.get("JACKIE_ZHANG")); ???} ???/** ????* ?将对象转换为JSON字符串 ????*/ ???public static void test3() { ???????UserInfo info = new UserInfo(); ???????info.setName("zhangsan"); ???????info.setAge(24); ???????String str_json = JSON.toJSONString(info); ???????System.out.println("JSON=" + str_json); ???} ???/** ????* 将复杂的字符串转换成字符串 ????*/ ???public static void test4() { ???????HashMap<String, Object> map = new HashMap<String, Object>(); ???????map.put("username", "zhangsan"); ???????map.put("age", 24); ???????map.put("sex", "男"); ???????// map集合 ???????HashMap<String, Object> temp = new HashMap<String, Object>(); ???????temp.put("name", "xiaohong"); ???????temp.put("age", "23"); ???????map.put("girlInfo", temp); ???????// list集合 ???????List<String> list = new ArrayList<String>(); ???????list.add("爬山"); ???????list.add("骑车"); ???????list.add("旅游"); ???????map.put("hobby", list); ???????String jsonString = JSON.toJSONString(map); ???????System.out.println("JSON=" + jsonString); ???} ???/** ????* 将json字符串转换成bean对象 ????*/ ???public static void test5() { ???????String json = "{\"name\":\"chenggang\",\"age\":24}"; ???????UserInfo userInfo = JSON.parseObject(json, UserInfo.class); ???????System.out.println("name:" + userInfo.getName() + ", age:" + userInfo.getAge()); ???} ???/** 泛型的反序列化 */ ???public static void test6() { ???????String json = "{\"user\":{\"name\":\"zhangsan\",\"age\":25}}"; ???????Map<String, UserInfo> map = JSON.parseObject(json, new TypeReference<Map<String, UserInfo>>() { ???????}); ???????System.out.println(map.get("user").getAge()); ???} ???/** ????* 时间的序列化 ????*/ ???public static void test7() { ???????Date date = new Date(); ???????// 输出毫秒值 ???????System.out.println(JSON.toJSONString(date)); ???????// 默认格式为yyyy-MM-dd HH:mm:ss ???????System.out.println(JSON.toJSONString(date, SerializerFeature.WriteDateUseDateFormat)); ???????// 根据自定义格式输出日期 ???????System.out.println(JSON.toJSONStringWithDateFormat(date, "yyyy-MM-dd", SerializerFeature.WriteDateUseDateFormat)); ???}