[英]Struts2 JSON to Java Action Object (can't find the error)
我已經嘗試了多個版本並閱讀了一些相關的答案,但是我仍然無法弄清楚為什么Struts沒有填充Action屬性user
。
這是我的ajax電話
function save_new_user() {
var user =
{ username: $('#new_user_username').val(),
email: $('#new_user_email').val(),
password: $('#new_user_password').val()
};
user_json = JSON.stringify(user);
console.log(user_json);
var data = {'user': user_json};
$.ajax({
type : 'GET',
url : 'SaveNewUser',
data: data,
dataType : "json",
contentType: 'application/json',
success : function(data, textStatus, jqXHR) {
if(data) {
}
},
});
}
順便說一句,在控制台中打印
{"username":"dd","email":"ff","password":"gg"}
我的Action類(帶有注釋)(我沒有從struts2-json-plugin-2.3.24.1修改json-default
攔截器)是
package coproject.cpweb.actions;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;
import com.opensymphony.xwork2.ActionSupport;
import coproject.cpweb.utils.db.entities.UserDum;
import coproject.cpweb.utils.db.services.DbServicesImp;
@Action("SaveNewUser")
@ParentPackage("json-default")
@Results({
@Result(name="success", type="json"),
@Result(name="input", location="/views/error.jsp")
})
public class SaveNewUser extends ActionSupport{
private static final long serialVersionUID = 1L;
/* Services */
DbServicesImp dbServices;
public DbServicesImp getDbServices() {
return dbServices;
}
public void setDbServices(DbServicesImp dbServices) {
this.dbServices = dbServices;
}
/* Input Json */
private UserDum user = new UserDum();
public UserDum getUser() {
return user;
}
public void setUser(UserDum user) {
this.user = user;
}
/* Execute */
public String execute() throws Exception {
// dbServices.saveUser(user);
System.out.println(user.getUsername());
return "SUCCESS";
}
}
並且UserDum
實體是
package coproject.cpweb.utils.db.entities;
public class UserDum {
private String username;
private String email;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
但是,當請求到達時,struts-json-plugin的json
攔截器會嘗試設置“用戶”時遇到異常。
feb 04, 2016 12:20:14 PM com.opensymphony.xwork2.interceptor.ParametersInterceptor error
SEVERE: Developer Notification (set struts.devMode to false to disable this message):
Unexpected Exception caught setting 'user' on 'class coproject.cpweb.actions.SaveNewUser: Error setting expression 'user' with val
ue ['{"username":"dd","email":"ff","password":"gg"}', ]
feb 04, 2016 12:20:14 PM com.opensymphony.xwork2.util.LocalizedTextUtil warn
WARNING: Missing key [invalid.fieldvalue.user] in bundles [[org/apache/struts2/struts-messages, com/opensymphony/xwork2/xwork-mess
ages]]!
關於可能是什么錯誤的任何線索?
擴展json-default
包不會將json
攔截器設置為defaultStack
的攔截器,它只是定義存在此類攔截器。
在@Action
批注中使用interceptorRefs
可以將json
攔截器和defaultStack
設置為該動作。
@Action(value="SaveNewUser",
interceptorRefs={ @InterceptorRef("json"),
@InterceptorRef("defaultStack") })
或在類級別使用@InterceptorRefs
將攔截器應用於該類中定義的所有操作。
@InterceptorRefs({
@InterceptorRef("json"),
@InterceptorRef("defaultStack")
})
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