Android REST-java.lang.VerifyError:MappingJacksonHttpMessageConverter

我对这个论坛和android的java开发都是新手。我正在尝试使用Spring设置与服务的REST连接，但不断出现以下错误：

java.lang.VerifyError:org/springframework/http/converter/json/MappingJacksonHttpMessageConverter

这是我写的代码。谁能帮帮我吗

public ArrayList<Employee> getAllEmployees(){
    ResponseEntity<EmployeeContainer> responseEntity = null;
    RestTemplate restTemplate = new RestTemplate();
    restTemplate.getMessageConverters().add(new MappingJacksonHttpMessageConverter());

    responseEntity =  restTemplate.exchange(BASE_URL + "employee", HttpMethod.GET, getRequestEntity(), EmployeeContainer.class);
    return responseEntity.getBody().getEmployees();
}

---

一旦检查这些

异步任务

或

清单

文件的问题，以及

权限

，或：

检查

资源

xml

，

可绘制

等是否正确配置以获得输出

我还得到了我使用的

lib文件
和上面的过程相同的错误

并检查您正在执行的

HTTP

或

HTTPS

---

一旦检查这些

异步任务

或

清单

文件的问题，以及

权限

，或：

检查

资源

xml

，

可绘制

等是否正确配置以获得输出

我还得到了我使用的

lib文件
和上面的过程相同的错误

并检查您正在执行的

HTTP

或

HTTPS

10-15 12:37:42.983  25836-25854/com.project.sandbox2 E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
java.lang.RuntimeException: An error occured while executing doInBackground()
        at android.os.AsyncTask$3.done(AsyncTask.java:299)
        at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
        at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
        at java.util.concurrent.FutureTask.run(FutureTask.java:239)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
        at java.lang.Thread.run(Thread.java:856)
 Caused by: java.lang.VerifyError: org/springframework/http/converter/json/MappingJacksonHttpMessageConverter
        at com.project.sandbox2.EmployeeService.getAllEmployees(EmployeeService.java:36)
        at com.project.sandbox2.RestTask.doInBackground(RestTask.java:19)
        at com.project.sandbox2.RestTask.doInBackground(RestTask.java:12)
        at android.os.AsyncTask$2.call(AsyncTask.java:287)
        at java.util.concurrent.FutureTask.run(FutureTask.java:234)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
        at java.lang.Thread.run(Thread.java:856)
10-15 12:37:43.143      304-524/system_process W/ActivityManager﹕ Force finishing      activity com.project.sandbox2/.MainActivity
10-15 12:37:43.235      304-524/system_process W/WindowManager﹕ Failure taking     screenshot for (328x583) to layer 21010
10-15 12:37:43.483       36-190/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
10-15 12:37:43.533        36-36/? E/SurfaceFlinger﹕ ro.sf.lcd_density must be defined as a build property
10-15 12:37:44.793      304-404/system_process E/ThrottleService﹕ problem during  onPollAlarm: java.lang.IllegalStateException: problem parsing stats:  java.io.FileNotFoundException: /proc/net/xt_qtaguid/iface_stat_all: open failed: ENOENT (No  such file or directory)
10-15 12:37:46.583      407-409/com.android.phone D/dalvikvm﹕ GC_CONCURRENT freed 385K,  18% free 2913K/3548K, paused 5ms+6ms, total 54ms