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HttpServletResponse

 


HttpServletResponse设置响应体响应字符数据

PrintWriter getWriter():获取字符输出流,可以响应字符数据

例子: response.getWriter().write("<h1>HelloWorld!<h1>") ;

第一种形式:

  esponse.setCharacterEncoding("UTF-8");//获取这个流对象之前设置一个编码方式

  response.setHeader("content-type", "text/html;charset=UTF-8") ;// 响应头content-type

  response.getWriter().write("你好啊啊啊");

 

第二种形式:

 

   response.setContentType("text/html;charset=utf-8") ;

  response.getWriter().write("你好") ;

 

 

 

 


HttpServletResponse设置响应体响应字节数据

ServletContext context = getServletConfig().getServletContext();

String path = context.getRealPath("/WEB-INF/classes/mv.jpg");

FileInputStream fis = new FileInputStream(path);

ServletOutputStream stream = response.getOutputStream();

IOUtils.copy(fis, stream) ;//借助commons-io-2.0.jar和commons-fileupload-1.2.1.jar

 

HttpServletResponse