复杂的json字符串解析（真实案例）

package sior.util; import sior.bo; import com.fasterxml.jackson.annotation.JsonInclude.Include; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper; public class JackSonUtil { /** * Json字符串转对象 * * @param <T> * @param jsonStr * @param clazz * @return * @throws Exception */ public static <T> T jsonStrToBean(String jsonStr, Class<T> clazz) throws Exception { ObjectMapper mapper = new ObjectMapper(); // mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false); return mapper.readValue(jsonStr, clazz); } /** * 对象转Json字符串 * @param bean * @return * @throws Exception */ public static String beanToJsonStr(Object bean) throws Exception { ObjectMapper mapper = new ObjectMapper(); return mapper.writeValueAsString(bean); } public static String beanToJsonNoNull(Object bean) throws JsonProcessingException { ObjectMapper mapper = new ObjectMapper(); mapper.setSerializationInclusion(Include.NON_NULL); // 属性为NULL不序列化 return mapper.writeValueAsString(bean); } } //调用方法，将json字符串转换成bean对象 public static void main(String[] args) { //比较复杂的json不适合用gson解析，可能会出问题； //bean对象根据json字符串声明，{}用bean对象声明，[]用list<bean>声明 ； //声明bean对象时，set方法上边要加上@JsonProperty("xx"),xx表示："TS"、"ZTS"、"DYSJ"、"Field"、"Data"json字符串中的key值； //并且json字符串中有汉语："身份证号码":"110105195312192511",使用@JsonProperty("身份证号码") //jsonStr 字符串没有加转译符号"\"，自己加吧！ String searchResult = "{ "TS":[ {"ZTS":"1","DYSJ":"2018-12-18 11:36:25"}], "Field":[ {"fieldCname":"姓名","fieldEname":"姓名"}, {"fieldCname":"身份证号码","fieldEname":"身份证号码"}, {"fieldCname":"性别","fieldEname":"性别"}, {"fieldCname":"民族","fieldEname":"民族"}, {"fieldCname":"籍贯","fieldEname":"籍贯"}, {"fieldCname":"出生地","fieldEname":"出生地"}, {"fieldCname":"出生日期","fieldEname":"出生日期"}, {"fieldCname":"户籍地址","fieldEname":"户籍地址"}, {"fieldCname":"户号","fieldEname":"户号"}, {"fieldCname":"与户主关系","fieldEname":"与户主关系"}, {"fieldCname":"户口类别","fieldEname":"户口类别"}, {"fieldCname":"集体户类别","fieldEname":"集体户类别"}, {"fieldCname":"进京日期","fieldEname":"进京日期"}, {"fieldCname":"户籍录入时间","fieldEname":"户籍录入时间"}], "Data":[ {"姓名":"何瑞喜", "身份证号码":"110105195312192511", "性别":"男", "民族":"汉族", "籍贯":"北京市", "出生地":"北京市", "出生日期":"1953-12-19", "户籍地址":"北京市东城区", "户号":"7541382", "与户主关系":"户主(男)", "户口类别":"非农业家庭户", "集体户类别":"", "进京日期":"", "户籍录入时间":"2004-12-16 00:00:00"}] }"; logger.info("登记信息查询接口反馈内容："+searchResult); DataPersonnelRegistration jsonStrToBean = JackSonUtil.jsonStrToBean(searchResult, DataPersonnelRegistration.class); DataPersonnelInfo dataPersonnelInfo = jsonStrToBean.getData().get(0); String personnelIdCard = dataPersonnelInfo.getIdCard(); //json字符串复杂时，这两种方法解析时会报错。不建议使用 //Map<String, String> map = new Gson().fromJson(personMap, new TypeToken<Map<String, String>>(){}.getType()); //DataPersonnelRegistration jsonStrToBean = new Gson().fromJson(personMap, DataPersonnelRegistration.class); }