主页:
http://jackson.codehaus.org/
https://github.com/FasterXML/jackson
当前jackson分为三部分,需要分别下载;
jackson-annotations-2.5.0.jar,jackson-core-2.5.0.jar,jackson-databind-2.5.0.jar
java bean:
package com.srie.test.json; import java.io.IOException; import com.fasterxml.jackson.databind.ObjectMapper; public class TestJSON { public static void main(String[] args) throws IOException { User user1 = new User(1, "a"); User user2 = new User(2, "b"); ObjectMapper mapper = new ObjectMapper(); // mapper.writeValue(System.out, user1); System.out.println(mapper.writerWithDefaultPrettyPrinter() .writeValueAsString(user1)); String string = mapper.writeValueAsString(user2); System.out.println(string); } } class User { private int id; private String name; @Override public String toString() { return "User [id=" + id + ", name=" + name + "]"; } public User() { } public User(int id, String name) { super(); this.id = id; this.name = name; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } }