获取 request 中 json 数据

import java.io.IOException; import javax.servlet.http.HttpServletRequest; /** * request 对象的相关操作 * @author zhangtengda * @version 1.0 * @created 2015年5月2日 下午8:25:43 */ public class GetRequestJsonUtils { /*** * 获取 request 中 json 字符串的内容 * * @param request * @return : <code>byte[]</code> * @throws IOException */ public static String getRequestJsonString(HttpServletRequest request) throws IOException { String submitMehtod = request.getMethod(); // GET if (submitMehtod.equals("GET")) { return new String(request.getQueryString().getBytes("iso-8859-1"),"utf-8").replaceAll("%22", "\""); // POST } else { return getRequestPostStr(request); } } /** * 描述:获取 post 请求的 byte[] 数组 * <pre> * 举例： * </pre> * @param request * @return * @throws IOException */ public static byte[] getRequestPostBytes(HttpServletRequest request) throws IOException { int contentLength = request.getContentLength(); if(contentLength<0){ return null; } byte buffer[] = new byte[contentLength]; for (int i = 0; i < contentLength;) { int readlen = request.getInputStream().read(buffer, i, contentLength - i); if (readlen == -1) { break; } i += readlen; } return buffer; } /** * 描述:获取 post 请求内容 * <pre> * 举例： * </pre> * @param request * @return * @throws IOException */ public static String getRequestPostStr(HttpServletRequest request) throws IOException { byte buffer[] = getRequestPostBytes(request); String charEncoding = request.getCharacterEncoding(); if (charEncoding == null) { charEncoding = "UTF-8"; } return new String(buffer, charEncoding); } }