android不支持的编码异常

Question

我正在使用commons-httpclient。 在我下面给出的android代码中，StringRequestEntity总是抛出不支持的编码异常的异常。但是上面的代码在java代码中执行时工作正常。但在android代码中给出了异常错误。这是进口

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.commons.httpclient.methods.StringRequestEntity;

代码段

                HttpClient client = new HttpClient();
                PostMethod method = new PostMethod(URL);
                StringBuffer requestContent = new StringBuffer();

                RequestObject requestObject = new RequestObject();
                requestObject.setMobileNo("9999999999");

                Gson gson = new Gson();
                requestContent.append(gson.toJson(requestObject));
                String requestContentString = requestContent.toString();
                Log.d(TAG, "Request = " + requestContentString);

                RequestEntity entity = new StringRequestEntity(requestContentString, "application/text", URL);

            } 
            catch (UnsupportedEncodingException e)
            {
                e.printStackTrace();
            }