Question

我一直在互联网上寻找一种（正确的）@Consume在我服务器上的网络资源中的“应用程序/ json”文件。

我正在使用glassfish应用服务器，所以它是一个java资源。

这里是调用javascvript代码：

        var url="/MBC/pages/lives/";
        var mygetrequest=new ajaxRequest();
        mygetrequest.onreadystatechange=function(){
         if (mygetrequest.readyState==4){
          if (mygetrequest.status==200 || window.location.href.indexOf("http")==-1){
              var render="";

              var JsonIn =JSON.parse(mygetrequest.responseText);

              if(JsonIn.error==undefined){
                    render="generic error"; 
                  }
               }else
                  render=mygetrequest.responseText  ;

               document.getElementById(div).innerHTML=render;

            }else{
           render="An error has occured making the request";
          } 
        };
        var json2Send = "{" +
                "boss:\""+location.href.substring(location.href.length-5,location.href.length-4)+"\"," ;
        if(document.newLive.bval.value=='')
            json2Send+="bands:[],";
        else
            json2Send+="bands:["+document.newLive.bval.value+"],";

        json2Send+="data:\""+document.newLive.dateEvent.value+"\"," +
                "address:{street:\""+document.newLive.street.value+"\"," +
                        "number:\""+document.newLive.number.value+"\"," +
                        "city:\""+document.newLive.city.value+"\"," +
                        "region:\""+document.newLive.region.value+"\"," +
                        "state:\""+document.newLive.state.value+"\"}" +
                "}";
        mygetrequest.open("POST", url, true);
        mygetrequest.setRequestHeader("Content-type", "application/json");
        mygetrequest.send(json2Send);

其中json2Send是客户端必须发送到服务器的json String。

这里是服务器端代码：

@POST
@Path("configLiveBand")
@Consumes("application/json")
@Produces("application/json")
public String liveBandInsert(String jsonIn, @Context HttpServletRequest request) throws ParseException{

我现在问你，为了让服务器读取来自javascript的输入json字符串，我该怎么办？显然，我上面描述的方式不起作用。服务器返回

HTTP Status 405 -

type Status report

message

descriptionThe specified HTTP method is not allowed for the requested resource ().

通过互联网查看我的问题，我找到了涉及“BufferedReader”类的“readline（）”方法的解决方案。我不喜欢这个解决方案。我更喜欢，如果是一种方式，注入json文件而不是逐行读取输入字符串。

任何帮助都被广泛接受感谢

Answer 1

问题是菲利普写的json：

json2Send+="\"data\":\""+document.newLive.dateEvent.value+"\"," +
        "\"address\":{\"street\":\""+document.newLive.street.value+"\"," +
                "\"number\":\""+document.newLive.number.value+"\"," +
                "\"city\":\""+document.newLive.city.value+"\"," +
                "\"region\":\""+document.newLive.region.value+"\"," +
                "\"state\":\""+document.newLive.state.value+"\"}" +
        "}";

而不是

json2Send+="data:\""+document.newLive.dateEvent.value+"\"," +
        "address:{street:\""+document.newLive.street.value+"\"," +
                "number:\""+document.newLive.number.value+"\"," +
                "city:\""+document.newLive.city.value+"\"," +
                "region:\""+document.newLive.region.value+"\"," +
                "state:\""+document.newLive.state.value+"\"}" +
        "}";

现在我可以阅读，发布并将json结果发送回客户端。 ;-)感谢Philipp

Answer 2

很高兴我能提供帮助。

我仍然建议使用实际的Javascript对象表示法（JSON）而不是字符串连接来构建json2Send，例如像这样：

// This creates an "empty" JS object, with no properties.
var json2Send = new Object();
var length = location.href.length;
// Adding a property is as easy as just setting it, it will be created by this.
json2Send.boss = location.href.substring(length - 5, length - 4);
if (document.newLive.bval.value == '') {
  json2Send.bands = [];
} else {
  json2Send.bands = [document.newLive.bval.value];
}
json2Send.data = document.newLive.dateEvent.value;
// Properties can also be other objects, here created with the
// object literal notation of { key:value, ...}.
json2Send.address = {
  // Inside, it's just another JS object again,
  // this time setting properties with literal notation key:value
  // Note how there's no need to quote anything here!
  street: document.newLive.street.value,
  number: document.newLive.number.value,
  city: document.newLive.city.value,
  region: document.newLive.region.value,
  state: document.newLive.state.value
};

然后将其转换为HTTP POST的字符串，如下所示：

mygetrequest.open("POST", url, true);
mygetrequest.setRequestHeader("Content-type", "application/json");
mygetrequest.send(JSON.stringify(json2Send));

这将更早地捕获语法错误，使您无需手动引用所有不同的部分，最有可能更快，并确保整个事情更加健壮。

将json发布到java服务器

2 个答案: