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JAVA操作ObjectMapper类

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【JAVA操作ObjectMapper类】青春须早为，岂能长少年。这篇文章主要讲述JAVA操作ObjectMapper类相关的知识，希望能为你提供帮助。

package com.zving; import org.codehaus.jackson.map.ObjectMapper; /** * 学习ObjectMapper类 * * @author Clover */ public class JacksonTester {public static void main(String[] args) { ObjectMapper mapper = new ObjectMapper(); String jsonString = ""; stringToStudent(mapper, jsonString); studentToString(mapper, jsonString); stringToStudentList(mapper, jsonString); }/** * 字符串转实体类 * * @param mapper * @param jsonString */ public static void stringToStudent(ObjectMapper mapper, String jsonString) { jsonString = "{"id":1001,"name":"Tom","info":"一个小男孩"}"; try { Student student = mapper.readValue(jsonString, Student.class); System.out.println(student); } catch (Exception e) { e.printStackTrace(); } }/** * 实体类转字符串 * * @param mapper * @param jsonString */ public static void studentToString(ObjectMapper mapper, String jsonString) {Student student = new Student(); student.setId(1002); student.setName("李四"); student.setInfo("一个小女孩"); try { jsonString = mapper.writeValueAsString(student); System.out.println(jsonString); } catch (Exception e) { e.printStackTrace(); } }/** * 字符串转 List< 实体类> * * @param mapper * @param jsonString */ public static void stringToStudentList(ObjectMapper mapper, String jsonString) { jsonString = "[{"id":1001,"name":"Tom","info":"一个小男孩"},{"id":1002,"name":"Jane","info":"一个小女孩"}]"; try { Student[] stu = mapper.readValue(jsonString, Student[].class); for (Student student : stu) { System.out.println(student); }String ss = mapper.writeValueAsString(stu); System.out.println(ss); } catch (Exception e) { e.printStackTrace(); } }}

 

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