如何在 Angular JS 中发送 java 对象

Question

我有一个 JS 文件正在尝试执行 POST 方法，但需要一个特定的 java 对象作为输入。

这是服务器中 Post 方法的签名：

@Path("/branches")
public class BranchResource {

@POST
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response post(BranchDescriptor branch) {
.
.

这里是 JS 函数（使用 Angular）

$scope.retry = function() {
    $http({
           url : "rest/branches",
           method : "POST",
           dataType : "json",//not sure is needed
           data : "way to get Branch descriptor "
           headers : {
                 "Content-Type" : "application/json; charset=utf-8",
                 "Accept" : "application/json"
           }
    }).success(function(data) {
           $scope.items = data;
    }).error(function(data) {
           alert('err');
    });
 };

我收到以下错误：

??? 27, 2014 3:27:48 PM com.sun.jersey.spi.container.ContainerRequest getEntity
SEVERE: A message body reader for Java class    xxx.api.BranchDescriptor, and Java type class xxx.BranchDescriptor, and MIME media type application/octet-stream was not found.
The registered message body readers compatible with the MIME media type are:
application/octet-stream ->
  com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
  com.sun.jersey.core.impl.provider.entity.FileProvider
  com.sun.jersey.core.impl.provider.entity.InputStreamProvider
  com.sun.jersey.core.impl.provider.entity.DataSourceProvider
  com.sun.jersey.core.impl.provider.entity.RenderedImageProvider
*/* ->

所以，我尝试添加这样的数据：

数据：{ "_protectedBranch" : "pf_something", "_newBranch" : "some_branch", "_commitId" : "some_commit", “_commiter”：“某人” },

并得到以下错误：

??? 27, 2014 3:42:46 PM com.sun.jersey.spi.container.ContainerResponse mapMappableContainerException
SEVERE: The exception contained within MappableContainerException could not be mapped to a response, re-throwing to the HTTP container
org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "_protectedBranch" (Class xxx.BranchDescriptor), not marked as ignorable
 at [Source: HttpInputOverHTTP@66aee27d; line: 1, column: 22] (through reference chain: xxx.BranchDescriptor["_protectedBranch"])
    at org.codehaus.jackson.map.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:53)

如何传递 BranchDescriptor 对象进行发送？ 我错过了什么？

Answer 1

好的，发现我遗漏了什么，这只是创建分支并将其发送到http中的数据的一种方式：

var branch = {
            protectedBranch:"some_branch",
            newBranch:"some_branch",
            commitId: "some_commit",
            commiter:"some_commiter"
    }
    $scope.retry = function() {
        $http({
               url : "rest/branches",
               method : "POST",
               data : branch,
               headers : {
                     "Content-Type" : "application/json; charset=utf-8",
                     "Accept" : "application/json"
               }
        }).success(function(data) {
               $scope.items = data;
        }).error(function(data) {
               alert('err');
        });

希望对其他人有所帮助。

Answer 2

您需要像这样在data 中传递一个javascript 对象：data: {param1: param1value, param2: param2value}

Answer 3

你不需要dataType，你可以尝试发送一个对象而不是这样的字符串：

$http({
   url : "rest/branches",
   method : "POST",
   data : {branch : "way to get Branch descriptor" },
   headers : {
        "Content-Type" : "application/json; charset=utf-8",
        "Accept" : "application/json"
   }
})

---

在文档中：

$http 服务会自动为所有请求添加特定的 HTTP 标头。

• 接受：application/json, text/plain, * / *
• 内容类型：应用程序/json

---

Angular js 发送带有上述标头的请求，而 jQuery 发送此标头：

• '应用程序/x-www-form-urlencoded; charset=UTF-8'