[Java]将Base64编码字符转为图片

    /**
 * 根据传入的Base64压缩后的编码，反向生成图片，存入服务器，并且返回html img标签字符串
 * @param remark
 * @param request
 * @return
 */
public static String createRemarks(String remark , HttpServletRequest request){
if(remark==null||"".equals(remark)){
return null;
        }

        String[] split = remark.split(",");
        String start = "<p>";
        StringBuffer center = new StringBuffer() ;
for(String rem : split){
//绝对路径-生成图片用的绝对路径
            String path = request.getServletContext().getRealPath("/remarkImage"); 
            String imageName = UUID.randomUUID().toString() + ".jpg";
            String imagePath = path+"\\"+imageName;
boolean generateImage = generateImage(rem,imagePath);
//虚拟路径-img回显时用的虚拟路径
            String contextPath = request.getServletContext().getContextPath();
            contextPath = contextPath+"/remarkImage/"+imageName;
if(generateImage){
                String createHtmlImage = createHtmlImage(contextPath);
                center.append(createHtmlImage);
            }
        }
        String end = "</p>";
        String string = start + center.toString() + end;
return string;
    }

    /**
 * 创建一个HTML编码的图片标签
 * @return
 */
public static String createHtmlImage (String imageSrc){
        String image = "<img src=\""+imageSrc+"\" />";
return image;
    }

注 ： 图片会存放在服务器根目录remarkImage文件夹中。