SSH总结（二）1、文件的操作，读写文件，解决乱码问题
读文件
InputStreamReader isr = new InputStreamReader(new FileInputStream(new File(path)), "UTF-8");BufferedReader reader = new BufferedReader(isr);String s;while ((s = reader.readLine()) != null) {content += s + "\n";}reader.close();
写文件
Writer writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(newFile1.getAbsolutePath().toString()), "UTF-8"));writer.write(content);writer.close();
2、struts2常用标签
单选框：<s:radio name="Gender" list="#{'男':'男','女':'女'}" listKey="key" listValue="value" value="'男'" />
时间格式化：<s:date name="publishTime" format="yyyy年MM月dd日 HH:mm:ss" />
下拉框：<s:select list="#request.role" name="role1" value="roleName" key="id" headerKey="0" headerValue="清选择角色"></s:select>
3、Ajax上传文件
ajax上传文件主要是使用了ajaxfileupload.js插件，ajax代码如下所示：
HTMl代码：
<input id="fileToUpload" type="file" size="20" name="myFile" class="input"><button type="button" id="buttonUpload" data-dismiss="modal" class="btn btn-PRimary">上传</button>
js代码：
$("#buttonUpload").click(function() {//验证图片格式 var format = $("#fileToUpload").val();var type = format.substring(format.lastIndexOf(".") + 1, format.length).toLowerCase();onsole.info(format);console.info(type);if (type != "jpg" && type != "jpeg" && type != "bmp" && type != "gif" && type != "png") {alert("请上传正确的图片格式");return;}$.ajaxFileUpload({url : 'notice_AddImage.action',//处理图片脚本ecureuri : false,fileElementId : 'fileToUpload',//file控件iddataType : 'text',success : function(data) {$("#dd").html(data);var value = $("#dd pre").html();if (value == "undefined" || value == null) {value = data;}console.info("dd:" + value);$("#btn_image").val(value);console.info("image:" + $("#btn_image").val());$("#tooltip").html("图片导入成功");},error : function(data) {$("#dd").val(data);console.info("error");alert("error");}});});
java代码：
1 // myFile属性用来封装上传的文件 2 private File myFile; 3 4 // myFileContentType属性用来封装上传文件的类型 5 private String myFileContentType; 6 7 // myFileFileName属性用来封装上传文件的文件名 8 private String myFileFileName; 9 InputStream is;10 try {11 is = new FileInputStream(myFile);12 // 设置上传文件目录13 String uploadPath = TemplateUtils.BASEPATH + "\\upload";14 // 重命名文件15 String fileName = StringUtils.getUUID() + this.getMyFileFileName().substring(myFileFileName.lastIndexOf("."), myFileFileName.length());16 // 设置目标文件17 File toFile = new File(uploadPath, fileName);18 // 创建一个输出流19 OutputStream os = new FileOutputStream(toFile);20 // 设置缓存21 byte[] buffer = new byte[1024];22 int length = 0;23 // 读取myFile文件输出到toFile文件中24 while ((length = is.read(buffer)) > 0) {25 os.write(buffer, 0, length);26 }27 // 关闭输入流28 is.close();29 // 关闭输出流30 os.close();