Angular没有添加正确的内容类型选项，我尝试了以下命令：

$http({
    url: "http://localhost:8080/example/teste",
    dataType: "json",
    method: "POST",
    headers: {
        "Content-Type": "application/json"
    }
}).success(function(response){
    $scope.response = response;
}).error(function(error){
    $scope.error = error;
});

上面的代码生成以下http请求：

POST http://localhost:8080/example/teste HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Content-Length: 0
Cache-Control: no-cache
Pragma: no-cache
Origin: http://localhost:8080
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31
Content-Type: application/xml
Accept: application/json, text/plain, */*
X-Requested-With: XMLHttpRequest
Referer: http://localhost:8080/example/index
Accept-Encoding: gzip,deflate,sdch
Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.6,en;q=0.4
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: JSESSIONID=C404CE2DA653136971DD1A3C3EB3725B

如您所见，内容类型不是“ application / json”，而是“ application / xml”。我在这里想念什么吗？