Spring Web's RestTemplate, exchange. java.util.LinkedHashMap cannot be cast to
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public class ReturnData<E> implements Serializable {
private int code;
private E data;
private String msg;
public ReturnData() {
}
public ReturnData(int code, E data, String msg) {
super();
this.code = code;
this.data = data;
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public E getData() {
return data;
}
public void setData(E data) {
this.data = data;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
@Override
public String toString() {
return "ReturnData [code=" + code + ", data=" + data + ", msg=" + msg
+ "]";
}
private int code;
private E data;
private String msg;
public ReturnData() {
}
public ReturnData(int code, E data, String msg) {
super();
this.code = code;
this.data = data;
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public E getData() {
return data;
}
public void setData(E data) {
this.data = data;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
@Override
public String toString() {
return "ReturnData [code=" + code + ", data=" + data + ", msg=" + msg
+ "]";
}
}
使用以下的方式来处理:
ParameterizedTypeReference<ReturnData<User>> typeRef = new ParameterizedTypeReference<ReturnData<User>>() {
};
HttpEntity<?> requestEntity = new HttpEntity<Object>(u);
ResponseEntity<ReturnData<User>> responseEntity = template.exchange(IConstants.USER_LOGIN_URL,
HttpMethod.POST, requestEntity, typeRef);
ReturnData<User> returnData = responseEntity.getBody();
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