问题描述
我试图创建的Java 接受两个列为 FORMDATA 参数的Web服务。
我已经使用了Angualr JS HTTP 服务作为this回答。
VAR queryRequest = $ HTTP（{
方法：POST，
网址：服务/测试/ testPath'，
数据：$参数（{listA的：myList1，数组listB：myList2}），
标题：{内容类型：应用程序/ x-WWW的形式urlen codeD;字符集= UTF-8'}
}）;
我的对象 myList1
VAR myList1 = [];
变种物镜= {};
OBJ [VAL1] = 1
OBJ [val2的] = 2
myList1.push（OBJ）;
我的对象 myList2
VAR myList2 = [];变种物镜= {};
OBJ [VAl11难] = 3
OBJ [val12] = 4
myList2.push（OBJ）;变种物镜= {};
OBJ [VAl11难] = 5
OBJ [val12] = 6
myList2.push（OBJ）;
我使用 javax.ws.rs。* 为休息服务
和我的Java服务器端点，它接受的数据，是AS-
@Path（testPath）
@POST
@Consumes（应用程序/ x-WWW的形式urlen codeD;字符集= UTF-8）
@Produces（应用/ JSON）
公共DataDTO addIssuancesForFP（@FormParam（为listA）列表＆LT;＆类型A GT; list1的，@FormParam（数组listB）列表＆LT;＆的TypeB GT;列表2）{ 的System.out.println（服务正确调用）;
返回service.getDTO（list1的，列表2）;
}
我CLASSE类型A
私人整数VAL1;
私人整数val2的;
// getter和setter方法，以及默认的构造函数
我CLASSE的TypeB
私人整数VAl11难;
私人整数val12;
// getter和setter方法，以及默认的构造函数
端点被正确地打，但我在这两个列表中获得空。请求结构是：
Accept:application/json, text/plain, */*
Content-Type:application/x-www-form-urlencoded;charset=UTF-8
listA[0][val1]:1
listA[0][val2]:2
listB[0][val11]:3
listB[0][val12]:4
listB[1][val11]:5
listB[1][val12]:6
It seems to be correct, I think mistake is in server part. How to resolve this?
Thanks
Note: This is just the mock data, which is in exact same format
Yeah so I don't think using form encoded data is going to work. The reason is that it is mainly for key value pairs, in the form
key1=value7&key2=value2&key3=value3...
What you are doing is using only two keys, listA and listB. So imagine what the values would need to look like, to send the entire list. It isn't pretty. For complex data, it is more viable to send the data in a format like JSON. The problem with this for your particular use case is that there are two unrelated objects (or arrays) to needs to send. For this, a solution would be to use multipart. You're in luck, because I just posted a late answer yesterday, on exactly how this can be handled with Angular.
I won't go through an explanation here about the code. Everything is explained in that link. Please read through it, as you go through this answer. I will be using Jersey as may JAX-RS implementation (as does the example in the link - but it also offers other alternative implementations)
Resource
import java.util.List;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import org.glassfish.jersey.media.multipart.FormDataParam;
@Path("/form")
public class FormResource {
@POST
@Consumes("multipart/form-data")
@Produces("text/plain")
public String addIssuancesForFP(@FormDataParam("listA") List<TypeA> list1,
@FormDataParam("listB") List<TypeB> list2) {
StringBuilder response = new StringBuilder();
for(TypeA a: list1) {
response.append(a.toString()).append("; ");
}
for (TypeB b: list2) {
response.append(b.toString()).append("; ");
}
System.out.println("Service is called correctly");
return response.toString();
}
}
Angular
<!DOCTYPE html>
<html ng-app="formApp">
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="js/libs/jquery/jquery.js"></script>
<script src="js/libs/angular.js/angular.js"></script>
<script>
angular.module("formApp", [])
.controller("defaultCtrl", function($scope, $http) {
$scope.sendData = function() {
var myList1 = [];
var obj = {};
obj["val1"] = "value1";
obj["val2"] = "value2";
myList1.push(obj);
var myList2 = [];
var obj = {};
obj["val11"] = "value11";
obj["val12"] = "value12";
myList2.push(obj);
var obj = {};
obj["val11"] = "value211";
obj["val12"] = "value212";
myList2.push(obj);
var list1 = JSON.stringify(myList1);
var list2 = JSON.stringify(myList2);
var boundary = Math.random().toString().substr(2);
var header = "multipart/form-data; charset=utf-8; boundary=" + boundary;
$http({
url: "/api/form",
headers: {"Content-Type": header},
data: createRequest(list1, list2, boundary),
method: "POST"
}).then(function(response) {
$scope.result = response.data;
});
function createRequest(list1, list2, boundary) {
var multipart = "";
multipart += "--" + boundary
+ "\r\nContent-Disposition: form-data; name=listA"
+ "\r\nContent-type: application/json"
+ "\r\n\r\n" + list1 + "\r\n";
multipart += "--" + boundary
+ "\r\nContent-Disposition: form-data; name=listB"
+ "\r\nContent-type: application/json"
+ "\r\n\r\n" + list2 + "\r\n";
multipart += "--" + boundary + "--\r\n";
return multipart;
}
};
});
</script>
</head>
<body>
<div ng-controller="defaultCtrl">
<button ng-click="sendData()">Send</button>
<p>{{result}}
</div>
</body>
</html>
Result
TypeA{val1=value1, val2=value2};
TypeB{val1=value11, val2=value12};
TypeB{val1=value211, val2=value212};
Which is expected, as I just built a string from the toString() methods, which I implemented in the TypeA and TypeB classes.
public class TypeA {
public String val1;
public String val2;
@Override
public String toString() {
return "TypeA{" + "val1=" + val1 + ", val2=" + val2 + '}';
}
}
public class TypeB {
public String val11;
public String val12;
@Override
public String toString() {
return "TypeB{" + "val1=" + val11 + ", val2=" + val12 + '}';
}
}
Hope this helps.
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