REST滿Web服務與澤西和jQuery得到奇怪的響應

我試圖建立一個REST滿Web服務。REST滿Web服務與澤西和jQuery得到奇怪的響應

在前端我使用jQuery來獲取數據。

在後端我從www.mkyong.com/webservices/jax-rs/json-example-with-jersey-jackson/

調用127.0.0.1:8080/restEx/的例子嘗試它REST/JSON /從瀏覽器中我得到的答案獲得預期：

{"title":"Enter Sandman","singer":"Metallica"}

但是，當我嘗試$。獲得（）來獲取這些數據，我沒有得到任何答覆。看着Firebug告訴我，我沒有收到數據。

我也

return Response.ok("{status: 'success'}").header("Access-Control-Allow-Origin", "*").build();

試了一下，因爲我發現在另一個問題在螢火蟲的解決方案，現在我看到的數據，但仍然jQuery的沒有執行成功的功能。我仍然只看到失敗功能。

那麼我做錯了什麼？我怎樣才能使這個東西工作？

我正在使用jQuery 2.0.2，Jersey 1.8（我使用Jersey 2從jersey.java.net/documentation/latest/getting-started.html#running-project嘗試了它，結果相同）並且部署了項目在Tomcat 7

的index.html

<!DOCTYPE html> 
<html> 
<head> 
    <title></title> 
    <script src="assets/js/jquery-2.0.2.js"></script> 


</head> 
<body> 
<div id="first" class="container"></div> 

<script type="text/javascript"> 

    var url = "http://127.0.0.1:8080/restEx/rest/json/get"; 

    $.get(url, {}, function(){alert("success");},"json") 
     .fail(function(){alert("fail");}) 
    ; 
</script> 
</body> 
</html>

的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 
    <modelVersion>4.0.0</modelVersion> 
    <groupId>com.mkyong.common</groupId> 
    <artifactId>RESTfulExample</artifactId> 
    <packaging>war</packaging> 
    <version>1.0-SNAPSHOT</version> 
    <name>RESTfulExample Maven Webapp</name> 
    <url>http://maven.apache.org</url> 

    <repositories> 
     <repository> 
      <id>maven2-repository.java.net</id> 
      <name>Java.net Repository for Maven</name> 
      <url>http://download.java.net/maven/2/</url> 
      <layout>default</layout> 
     </repository> 
    </repositories> 

    <dependencies> 
     <dependency> 
      <groupId>junit</groupId> 
      <artifactId>junit</artifactId> 
      <version>4.8.2</version> 
      <scope>test</scope> 
     </dependency> 

     <dependency> 
      <groupId>com.sun.jersey</groupId> 
      <artifactId>jersey-server</artifactId> 
      <version>1.8</version> 
     </dependency> 

     <dependency> 
      <groupId>com.sun.jersey</groupId> 
      <artifactId>jersey-json</artifactId> 
      <version>1.8</version> 
     </dependency> 

    </dependencies> 

    <build> 
     <finalName>restEx</finalName> 
     <plugins> 
      <plugin> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <configuration> 
        <source>1.6</source> 
        <target>1.6</target> 
       </configuration> 
      </plugin> 
     </plugins> 
    </build> 

</project>

的web.xml

<web-app id="WebApp_ID" version="2.4" 
    xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> 
    <display-name>Restful Web Application</display-name> 

    <servlet> 
     <servlet-name>jersey-serlvet</servlet-name> 
     <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class> 
     <init-param> 
      <param-name>com.sun.jersey.config.property.packages</param-name> 
      <param-value>com.mkyong.rest</param-value> 
     </init-param> 
     <init-param> 
      <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name> 
      <param-value>true</param-value> 
     </init-param> 
     <load-on-startup>1</load-on-startup> 
    </servlet> 

    <servlet-mapping> 
     <servlet-name>jersey-serlvet</servlet-name> 
     <url-pattern>/rest/*</url-pattern> 
    </servlet-mapping> 

</web-app>

JSONService.java

package com.mkyong.rest; 

import javax.ws.rs.Consumes; 
import javax.ws.rs.GET; 
import javax.ws.rs.POST; 
import javax.ws.rs.Path; 
import javax.ws.rs.Produces; 
import javax.ws.rs.core.MediaType; 
import javax.ws.rs.core.Response; 

import org.codehaus.jettison.json.JSONException; 
import org.codehaus.jettison.json.JSONObject; 

import com.mkyong.Track; 

@Path("/json") 
public class JSONService { 

    @GET 
    @Path("/get") 
    @Produces(MediaType.APPLICATION_JSON) 
    public Track getTrackInJSON() { 

     Track track = new Track(); 
     track.setTitle("Enter Sandman"); 
     track.setSinger("Metallica"); 

     return track; 

    } 

    @POST 
    @Path("/post") 
    @Consumes(MediaType.APPLICATION_JSON) 
    public Response createTrackInJSON(Track track) { 

     String result = "Track saved : " + track; 
     return Response.status(201).entity(result).build(); 

    } 


    @GET @Path("/test") @Produces(MediaType.APPLICATION_JSON) 
    public JSONObject test() throws JSONException{ 
     return new JSONObject("{status:'success'}"); 
    } 
}

Track.java

package com.mkyong; 

public class Track { 

    String title; 
    String singer; 

    public String getTitle() { 
     return title; 
    } 

    public void setTitle(String title) { 
     this.title = title; 
    } 

    public String getSinger() { 
     return singer; 
    } 

    public void setSinger(String singer) { 
     this.singer = singer; 
    } 

    @Override 
    public String toString() { 
     return "Track [title=" + title + ", singer=" + singer + "]"; 
    } 

}

來源

2013-07-05 Sören

由於馬科斯Zolnoswski我能夠鏈接解決我的問題。隨着在那裏提供的信息，我能夠找到http://blog.usul.org/cors-compliant-rest-api-with-jersey-and-containerresponsefilter/其中解決方案描述如何將缺少的標題添加到所有請求。

作爲初始化參數，以我的球衣的Servlet：

<init-param> 
    <param-name>com.sun.jersey.spi.container.ContainerResponseFilters</param-name> 
    <param-value>your.package.ResponseCorsFilter</param-value> 
</init-param>

ResponseCorsFilter。java的

package yoiur.package.security; 

import javax.ws.rs.core.Response; 
import javax.ws.rs.core.Response.ResponseBuilder; 

import com.sun.jersey.spi.container.ContainerRequest; 
import com.sun.jersey.spi.container.ContainerResponse; 
import com.sun.jersey.spi.container.ContainerResponseFilter; 

public class ResponseCorsFilter implements ContainerResponseFilter { 

    @Override 
    public ContainerResponse filter(ContainerRequest req, ContainerResponse contResp) { 

     ResponseBuilder resp = Response.fromResponse(contResp.getResponse()); 
     resp.header("Access-Control-Allow-Origin", "*") 
       .header("Access-Control-Allow-Methods", "GET, POST, OPTIONS"); 

     String reqHead = req.getHeaderValue("Access-Control-Request-Headers"); 

     if(null != reqHead && !reqHead.equals("")){ 
      resp.header("Access-Control-Allow-Headers", reqHead); 
     } 

     contResp.setResponse(resp.build()); 
      return contResp; 
    } 

}

來源

2013-07-10 13:09:45

錯誤的URL，改變http://127.0.0.1:8080/restEx/rest/json/test到http://127.0.0.1:8080/restEx/rest/json/get：

<!DOCTYPE html> 
<html> 
<head> 
    <title></title> 
    <script src="assets/js/jquery-2.0.2.js"></script> 


</head> 
<body> 
<div id="first" class="container"></div> 

<script type="text/javascript"> 

    var url = "http://127.0.0.1:8080/restEx/rest/json/get"; 

    $.get(url, {}, function(){alert("success");},"json") 
     .fail(function(){alert("fail");}) 
    ; 
</script> 
</body> 
</html>

來源

2013-07-05 20:38:42

有了正確的URL的行爲發生:( 我試着用這個servlet也與相同的行爲：公共類JSONServlet延伸的HttpServlet { \t公共無效的doGet（HttpServletRequest的請求，HttpServletResponse的響應） \t \t response.setContentType（「應用程序/ JSON」）; \t \t PrintWriter的OUT = response.getWriter（）; \t \t通過out.println（arrayObj）; \t \t out.close（）; \t} } –

現在你有一個交叉請求問題。也許會工作，如果你嘗試這個技巧：[鏈接]（http://stackoverflow.com/questions/5750696/how-to-get-a-cross-origin-resource-sharing-cors-post-request-working）。 –

謝謝你的提示。有了這些信息，我可以解決我的問題。我也發現這[鏈接]（http://blog.usul.org/cors-compliant-rest-api-with-jersey-and-containerresponsefilter/）。 –

REST滿Web服務與澤西和jQuery得到奇怪的響應

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