byte[] P_Buf;
...
response.reset();
response.setContentType("image/jpg");
OutputStream toClient = response.getOutputStream();
toClient.write(P_Buf);
toClient.flush();
//强制清出缓冲区\r
toClient.close();
...
response.reset();
response.setContentType("image/jpg");
OutputStream toClient = response.getOutputStream();
toClient.write(P_Buf);
toClient.flush();
//强制清出缓冲区\r
toClient.close();
//强制清出缓冲区\r
toClient.close(); 关闭之后,就会报错了。
...........改为 ServletOutputStream 试试
StandardWrapperValve[debugjsp]: Servlet.service() for servlet debugjsp threw exception
java.lang.IllegalStateException: getOutputStream() has already been called for this response
java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.apache.catalina.connector.ResponseBase.getWriter(ResponseBase.java:750)
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:165)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:166)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:158)
at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:205)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:177)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:198)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:193)
at org.apache.jsp.frmGetFile$jsp._jspService(frmGetFile$jsp.java:99)
上次白痴在jsp传个response参数给javabean就导致过这个问题,
你去google搜索一下这个错误, 也可以看看编译之后对应的servlet文件
ContentType还是什么的有了默认的html/text,
http://www.jguru.com/faq/view.jsp?EID=1023555
你写成一个servlet应该没问题