JSP 获取本地图片的实例详解

public void showPicture(){     String id = ServletActionContext.getRequest().getParameter("id");//前台传来的存图片路径实体类的主键id     HttpServletResponse response = ServletActionContext.getResponse();//struts2获取response     if(id != null && !"".equals(id)){       this.classicCases = this.classicCasesManager.findClassicCasesById(id);       String pic_path = this.classicCases.getImagesLocalPath();//图片路径       FileInputStream is;       try {         is = new FileInputStream(pic_path);         int i = is.available(); // 得到文件大小         byte data[] = new byte[i];         is.read(data); // 读数据         is.close();         response.setContentType("image/*"); // 设置返回的文件类型         OutputStream toClient = response.getOutputStream(); // 得到向客户端输出二进制数据的对象         toClient.write(data); // 输出数据         toClient.close();       } catch (FileNotFoundException e) {         e.printStackTrace();       } catch (IOException e) {         e.printStackTrace();       }     }   } 

<img alt="" id="images" src="<%=basePath %>ClassicCasesAction!showPicture.action?id=${classicCases.id}">