参考博客:http://www.cnblogs.com/yucy/p/9057049.html
1.经常遇到这种情况,传过来json的key名和我们javaBean的属性名不一样,导致接收不到:
Child类用来接收传过来的json串:
package com.test.dto; import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle; public class Child {
private String childName;
private String childAge;
private String chileFather; public String getChildName() {
return childName;
} public void setChildName(String childName) {
this.childName = childName;
} public String getChildAge() {
return childAge;
} public void setChildAge(String childAge) {
this.childAge = childAge;
} public String getChileFather() {
return chileFather;
} public void setChileFather(String chileFather) {
this.chileFather = chileFather;
} @Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
Controller来接收json串:
发送的json串:
package com.test.controller; import com.test.dto.Child;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping; @Controller
public class TestController2 { /**
* jsonField测试
* @param child
*/
@RequestMapping("/testJsonField.do")
public void testJsonField(@RequestBody Child child){
System.out.println(child);
}
}
打印出来,看到是收不到的:
Child[childName=<null>,childAge=<null>,chileFather=<null>]
2.对于这种@RequestBody的使用@JsonProperty将传过来的json key名能够映射到javaBean上:
Child:
package com.test.dto; import com.fasterxml.jackson.annotation.JsonProperty;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle; public class Child {
private String childName;
private String childAge;
private String chileFather; public String getChildName() {
return childName;
} @JsonProperty(value = "child_name")
public void setChildName(String childName) {
this.childName = childName;
} public String getChildAge() {
return childAge;
} @JsonProperty(value = "child_age")
public void setChildAge(String childAge) {
this.childAge = childAge;
} public String getChileFather() {
return chileFather;
} public void setChileFather(String chileFather) {
this.chileFather = chileFather;
} @Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
这样能收到了:
Child[childName=小孩儿,childAge=4,chileFather=<null>]
3.当使用fastjson解析数据时。
1)Child类此时不加任何注解。
2)发送请求:http://localhost:8081/testJsonField.do?childStr={child_name:123, child_age:1}
3)controller接收:
可以看到此时是接受不到的。
4)我们在Child类属性的set方法上加上@JSONField注解,name来匹配json串中的key:
public class Child {
private String childName;
private String childAge;
private String chileFather; public String getChildName() {
return childName;
} @JSONField(name="child_name")
public void setChildName(String childName) {
this.childName = childName;
} public String getChildAge() {
return childAge;
} @JSONField(name="child_age")
public void setChildAge(String childAge) {
this.childAge = childAge;
} public String getChileFather() {
return chileFather;
} public void setChileFather(String chileFather) {
this.chileFather = chileFather;
} @Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
再次接受就能收到了:
5)使用@JSONField(serialize = false) 在get方法上添加来过滤掉不需要序列化的字段:
Child类:
package com.test.dto; import com.alibaba.fastjson.annotation.JSONField;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle; public class Child {
private String childName;
private String childAge;
private String chileFather; public String getChildName() {
return childName;
} @JSONField(name="child_name")
public void setChildName(String childName) {
this.childName = childName;
} public String getChildAge() {
return childAge;
} @JSONField(name="child_age")
public void setChildAge(String childAge) {
this.childAge = childAge;
} @JSONField(serialize = false)
public String getChileFather() {
return chileFather;
} public void setChileFather(String chileFather) {
this.chileFather = chileFather;
} @Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
我们可以看到childFather字段没有被序列化:
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