Springmvc3实现文件上传
Spring自己封装了文件上传功能，可以利用
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;
MultipartFile multFile = multiRequest.getFile("imgFile");
需要在springmvc-servlet.xml里配置：
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
结合iframe实现局部刷新上传
代码：
1.JSP页面：
2 controller后台：
3 springmvc-servlet.xml
###############################################################
使用DiskFileItemFactory 及ServletFileUpload 组件进行上传
需要注意的是：所有的Form表单数据不再会自动绑定赋值，需要手动去设置值，还有就是不需要在springmvc-servlet.xml里配置：<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
后台处理类：
页面显示跟上图一样
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;
MultipartFile multFile = multiRequest.getFile("imgFile");
需要在springmvc-servlet.xml里配置：
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
结合iframe实现局部刷新上传
代码：
1.JSP页面：
<form:form method="post" action="${ctx}/wzxxfbpdtp/save" target="hidden_frame" id="pdtpNewForm" enctype="multipart/form-data" modelAttribute="wzXxfbPdtp">
<div class="pageContent" layoutH="30">
<div class="pageFormContent" align="center" style="overflow: hidden;">
<input type="hidden" name="imgPath" id="imgPath" />
<table align="center" width="500px" height="300px" border="0" cellpadding="0" cellspacing="0" style="margin-top: 10px;text-align: center;border-spacing: 10px;">
<tr>
<td width="70px">选择图片</td>
<td colspan="2"><input id="imgFile" name="imgFile" type="file" /></td>
</tr>
</table>
</div>
</div>
<iframe name="hidden_frame" id="hidden_frame" src="message.html" style="display:none"></iframe>
</form:form>
2 controller后台：
/** 保存新增,@Valid标注spirng在绑定对象时自动为我们验证对象属性并存放errors在BindingResult */
@RequestMapping(value = "/save")
public String create(ModelMap model,@Valid WzXxfbPdtp wzXxfbPdtp,HttpServletRequest request,HttpServletResponse response)throws Exception {
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;
MultipartFile multFile = multiRequest.getFile("imgFile");
// 扩展名格式：
String extName = "";
String message = "";
String newName = "";
boolean flag = true;
//取得上传的文件名
String fileName = multFile.getOriginalFilename();
if(fileName != null && !"".equals(fileName.trim())){
//上传文件的大小
long size = multFile.getSize();
if(size > (1024*1024)){
message = "只允许上传1M之内的图片";
flag = false;
}
if (fileName.lastIndexOf(".") >= 0) {
extName = fileName.substring(fileName.lastIndexOf("."));
}
//定义允许上传的文件类型
List<String> fileTypes = new ArrayList<String>();
fileTypes.add(".jpg");
fileTypes.add(".jpeg");
fileTypes.add(".gif");
fileTypes.add(".png");
if(!fileTypes.contains(extName.toLowerCase())){
message = "只允许上传jpg,jpeg,gif,png格式的图片";
flag = false;
}
String root=request.getSession().getServletContext().getRealPath("");
String savePath = root+File.separator+"pdtpFolder"+File.separator;
File f1 = new File(savePath);
if (!f1.exists()) {
f1.mkdirs();
}
if(flag){
DateFormat df = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ssSSS");
Calendar calendar = Calendar.getInstance();
//以当前时间为文件名 格式如：2011-09-03-19-30-36047
newName = df.format(calendar.getTime());
//newName = UUID.randomUUID().toString();
File newFile = new File(savePath + newName + extName);
try {
multFile.transferTo(newFile);
} catch (IllegalStateException e) {
e.printStackTrace();
flag = false;
} catch (IOException e) {
e.printStackTrace();
flag = false;
}
//设置图片的相对地址
wzXxfbPdtp.setTpdz("pdtpFolder/"+newName+extName);
//图片原名称
wzXxfbPdtp.setTpmc(fileName);
//设置ID与新生成的图片名
wzXxfbPdtp.setPkid(newName);
wzXxfbPdtpManager.save(wzXxfbPdtp);
}
}
// dwzCallback(model,CREATED_SUCCESS);
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
out.write("<script>parent.callback('"+flag+"','"+message+"')</script>");
// return LIST_ACTION;
return null;
}
3 springmvc-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"
default-autowire="byName" >
<!-- 开启支持@NumberFormat @DateTimeFormat @Valid标注 ,@DateTimeFormat用于bean 日期属性的格式化,请查看: http://static.springsource.org/spring/docs/3.0.2.RELEASE/spring-framework-reference/htmlsingle/spring-framework-reference.html#mvc-config-->
<mvc:annotation-driven validator="validator"/>
<!-- 自动搜索@Controller标注的类 -->
<context:component-scan base-package="com.**.controller"/>
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<!-- 拦截器注册 -->
<property name="interceptors">
<bean class="javacommon.springmvc.interceptor.SharedRenderVariableInterceptor"/>
</property>
</bean>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
<!-- 根据客户端的不同的请求决定不同的view进行响应, 如 /blog/1.json /blog/1.xml -->
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="ignoreAcceptHeader" value="true"/>
<property name="defaultContentType" value="text/html"/>
<!-- 扩展名至mimeType的映射,即 /user.json => application/json -->
<property name="mediaTypes">
<map>
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
</map>
</property>
<!-- 用于开启 /userinfo/123?format=json 的支持 -->
<property name="favorParameter" value="true"/>
<property name="viewResolvers">
<list>
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/pages"/>
<property name="suffix" value=".jsp"/>
</bean>
</list>
</property>
<property name="defaultViews">
<list>
<!-- for application/json -->
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
<!-- for application/xml -->
<!--
<bean class="org.springframework.web.servlet.view.xml.MarshallingView" >
<property name="marshaller">
<bean class="org.springframework.oxm.xstream.XStreamMarshaller"/>
</property>
</bean>
-->
</list>
</property>
</bean>
<!-- Mapping exception to the handler view -->
<bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
</props>
</property>
</bean>
</beans>
###############################################################
使用DiskFileItemFactory 及ServletFileUpload 组件进行上传
需要注意的是：所有的Form表单数据不再会自动绑定赋值，需要手动去设置值，还有就是不需要在springmvc-servlet.xml里配置：<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
后台处理类：
@Controller
@RequestMapping("/wzxxfbpdtp")
public class WzXxfbPdtpController extends BaseRestSpringController<WzXxfbPdtp,java.lang.String>{
//默认多列排序,example: username desc,createTime asc
protected static final String DEFAULT_SORT_COLUMNS = "";
private WzXxfbPdtpManager wzXxfbPdtpManager;
private final String LIST_ACTION = "redirect:/wzxxfbpdtp/manager";
/**
* 增加setXXXX()方法,spring就可以通过autowire自动设置对象属性,注意大小写
**/
public void setWzXxfbPdtpManager(WzXxfbPdtpManager manager) {
this.wzXxfbPdtpManager = manager;
}
String extName = "";
String message = "";
boolean flag = true;
Iterator<FileItem> it = fileList.iterator();
while (it.hasNext()) {
FileItem item = it.next();
//给取表单域的值，赋给wzXxfbPdtp对象
setFormFields(wzXxfbPdtp, item);
// 如果是文件类型字段
if (!item.isFormField()) {
name = item.getName();
long size = item.getSize();
if(size>(1024*1024)){
message="文件"+item.getName()+"大超过了1M，上传失败！";
json.put("statusCode", "300");
json.put("message", message);
flag = false;
break;
}
// 扩展名格式：
if (name.lastIndexOf(".") >= 0) {
extName = name.substring(name.lastIndexOf("."));
}
// 定义允许上传的文件类型
List<String> fileTypes = new ArrayList<String>();
fileTypes.add(".jpg");
fileTypes.add(".jpeg");
fileTypes.add(".gif");
fileTypes.add(".png");
if(!fileTypes.contains(extName.toLowerCase())){
message = "只允许上传jpg,jpeg,gif,png格式的图片";
json.put("statusCode", "300");
json.put("message", message);
flag = false;
break;
}
if(flag) {
DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ssSSS");
Calendar calendar2 = Calendar.getInstance();
//以当前时间为文件名 格式如：2011-09-03-19-30-36047
newName = df2.format(calendar2.getTime());
File newFile = new File(savePath+"/"+folderName+"/" + newName + extName);
item.write(newFile);
//设置图片的相对地址
wzXxfbPdtp.setTpdz(rootFile.getName()+"/"+folderName+"/"+newName+extName);
//图片原名称
wzXxfbPdtp.setTpmc(name);
}
}
}
if(flag){
wzXxfbPdtpManager.save(wzXxfbPdtp);
json.put("navTabId", "BM01040000");
json.put("statusCode", "200");
json.put("callbackType", "closeCurrent");
json.put("message", CREATED_SUCCESS);
}
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
out.write(json.toString());
out.flush();
out.close();
return null;
}
/*
* 取得Form表单各文本域的值，赋给wzXxfbPdtp对象
*/
private void setFormFields(WzXxfbPdtp wzXxfbPdtp, FileItem item) throws UnsupportedEncodingException {
if(item.isFormField()){
String field = item.getFieldName();
String temp;
if(field.equals("zzdm")){
temp = item.getString("utf-8");
wzXxfbPdtp.setZzdm(temp);
}
if(field.equals("zzjc")){
temp = item.getString("utf-8");
wzXxfbPdtp.setZzjc(temp);
}
if(field.equals("bmdm")){
temp = item.getString("utf-8");
wzXxfbPdtp.setBmdm(temp);
}
if(field.equals("bmjc")){
temp = item.getString("utf-8");
wzXxfbPdtp.setBmjc(temp);
}
if(field.equals("tpbt")){
temp = item.getString("utf-8");
wzXxfbPdtp.setTpbt(temp);
}
if(field.equals("tplj")){
temp = item.getString("utf-8");
wzXxfbPdtp.setTplj(temp);
}
if(field.equals("kd")){
temp = item.getString("utf-8");
wzXxfbPdtp.setKd(Integer.parseInt(temp));
}
if(field.equals("gd")){
temp = item.getString("utf-8");
wzXxfbPdtp.setGd(Integer.parseInt(temp));
}
if(field.equals("sfpd")){
temp = item.getString("utf-8");
wzXxfbPdtp.setSfpd(temp);
}
}
}
//删除本地图片文件
private void deleteLocalFile(HttpServletRequest request, WzXxfbPdtp pdtp) {
String path = pdtp.getTpdz();
String root = request.getSession().getServletContext().getRealPath("");
File rootFile = new File(root);
//得到图片存放的完整路径
String savePath = rootFile.getParent()+ConstantUtils.getFilePath()+"/"+path;
File f1 = new File(savePath);
if(f1.exists()){
f1.delete();
}
}
页面显示跟上图一样