7.05.1response乱码解决与字节流和字节流工具类

解决响应浏览器乱码问题:

resp.setContentType(“text/html;charset=utf-8”);
resp.setHeader(“Content-Type”, “text/html;charset=utf-8”);

给前端反应一个图片展示:

ServletOutputStream outputStream = resp.getOutputStream();
ServletContext servletContext = req.getServletContext();
// 获取webapp下的文件的绝对路径
String realPath = servletContext.getRealPath(“test.jpg”);
FileInputStream fileInputStream = new FileInputStream(realPath);
IOUtils.copy(fileInputStream, outputStream);
fileInputStream.close();