相关文章:
http://wangxinchun.iteye.com/blog/2055677
本文是一个例子,说明有继承情况下,多个子类的反序列化问题,看看代码吧
import java.util.ArrayList; import java.util.List; import org.codehaus.jackson.annotate.JsonSubTypes; import org.codehaus.jackson.annotate.JsonTypeInfo; import org.codehaus.jackson.map.ObjectMapper; /** * * @author xinchun.wang @email: 532002108@qq.com * @createTime 2015-3-24 下午8:27:12 */ public class JacksonJsonTest { public static void main(String[] args) throws Exception { List<A> dataList = new ArrayList<A>(); dataList.add(new C("10", 5)); dataList.add(new B(8, 5)); D d = new D(); d.setList(dataList); ObjectMapper mapper = new ObjectMapper(); String data = mapper.writeValueAsString(d); System.out.println(data); D result = mapper.readValue(data, D.class); System.out.println(result.getList()); } public static class D { List<A> list; public List<A> getList() { return list; } public void setList(List<A> list) { this.list = list; } } @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "typeName") @JsonSubTypes({ @JsonSubTypes.Type(value = B.class, name = "B"), @JsonSubTypes.Type(value = C.class, name = "C") }) public static class A { protected int a; public A() { } public A(int a) { this.a = a; } public int getA() { return a; } public void setA(int a) { this.a = a; } } @JsonTypeInfo(use = JsonTypeInfo.Id.CLASS, property = "typeName") public static class B extends A { public B() { } public B(int b, int a) { super(a); } private int b; public int getB() { return b; } public void setB(int b) { this.b = b; } } @JsonTypeInfo(use = JsonTypeInfo.Id.CLASS, property = "typeName") public static class C extends A { private String c; public C() { } public C(String c, int a) { super(a); this.c = c; } public String getC() { return c; } public void setC(String c) { this.c = c; } } }
输出:
{"list":[{"typeName":"C","a":5,"c":"10"},{"typeName":"B","a":5,"b":0}]}
[JsonTest$C@7ed75415, JsonTest$B@6ad16fc1]