获取Request 中 json 数据

import java.io.BufferedReader;import java.io.ByteArrayInputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import javax.servlet.ServletInputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletRequestWrapper;public class CustomHttpServletRequestWrapper extends HttpServletRequestWrapper { ???private final String body; ???????public String getBody() { ???????return this.body; ???} ???public CustomHttpServletRequestWrapper(HttpServletRequest request) throws IOException { ???????super(request); ???????StringBuilder stringBuilder = new StringBuilder(); ???????BufferedReader bufferedReader = null; ???????try { ???????????InputStream inputStream = request.getInputStream(); ???????????if (inputStream != null) { ???????????????bufferedReader = new BufferedReader(new InputStreamReader(inputStream)); ???????????????char[] charBuffer = new char[128]; ???????????????int bytesRead = -1; ???????????????while ((bytesRead = bufferedReader.read(charBuffer)) > 0) { ???????????????????stringBuilder.append(charBuffer, 0, bytesRead); ???????????????} ???????????} else { ???????????????stringBuilder.append(""); ???????????} ???????} catch (IOException ex) { ???????????throw ex; ???????} finally { ???????????if (bufferedReader != null) { ???????????????try { ???????????????????bufferedReader.close(); ???????????????} catch (IOException ex) { ???????????????????throw ex; ???????????????} ???????????} ???????} ???????body = stringBuilder.toString(); ???} ???@Override ???public ServletInputStream getInputStream() throws IOException { ???????final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(body.getBytes()); ???????ServletInputStream servletInputStream = new ServletInputStream() { ???????????public int read() throws IOException { ???????????????return byteArrayInputStream.read(); ???????????} ???????}; ???????return servletInputStream; ???} ???@Override ???public BufferedReader getReader() throws IOException { ???????return new BufferedReader(new InputStreamReader(this.getInputStream())); ???}}

CustomHttpServletRequestWrapper requestWrapper = new CustomHttpServletRequestWrapper(request);String body = requestWrapper.getBody();