標籤：uri jar ast 報錯 package 大小 lib ant code
一、編寫上傳介面<body> <form action="${pageContext.request.contextPath}/fileUploadAction" method="post" enctype="multipart/form-data"> 檔案：<input type="file" name="file1"><br /> <input type="submit" value="上傳"> </form></body>二、編寫後台Action
public class FileUpload extends ActionSupport{ //檔案：<input type="file" name="file1"><br /> private File file1; private String file1FileName; private String file1ContentType; public void setFile1(File file1) { this.file1 = file1; } public void setFile1FileName(String file1FileName) { this.file1FileName = file1FileName; } public void setFile1ContentType(String file1ContentType) { this.file1ContentType = file1ContentType; } @Override public String execute() throws Exception { /*****處理業務******/ //吧檔案上傳到upload目錄 //擷取上傳的路徑 String path = ServletActionContext.getServletContext().getRealPath("/upload"); File destFile = new File(path,file1FileName); FileUtils.copyFile(file1, destFile); return SUCCESS; }}三、編寫設定檔upload.xml(注意：class值用點分割)
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <package name="upload" extends="struts-default"> <!-- 注意class使用點 --> <action name="fileUploadAction" class="cn.itcast.e_fileupload.FileUpload"> <result name="success">/e/success.jsp</result> <!-- 配置錯誤視圖 --> <result name="input">/e/error.jsp</result> </action> </package></struts>四、把upload.xml引入struts.xml檔案
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <!-- 總的設定檔，引入其他檔案 --> <include file="cn/itcast/e_fileupload/upload.xml"></include></struts>五、配置（上傳檔案大小，以及類型）
1、struts預設上傳大小是2M；當檔案大於2M就會報錯，此時可以配置錯誤視圖error.jsp（可以顯示錯誤）。
<body> error.jsp<br /> <!-- 查看錯誤資訊 --> <%@ taglib uri="/struts-tags" prefix="s" %> <s:fielderror></s:fielderror> </body>
2、配置上傳檔案大小（struts-core-2.3.4.1.jar/org.apache.struts2/static/default.properties此檔案包含常量設定）
在src目錄下，建立constant.xml
<struts> <!-- 全域配置 --> <!-- 上傳檔案大小配置 :30M--> <constant name="struts.multipart.maxSize" value="31457280" /></struts>
3、配置上傳檔案類型（配置攔截器）
<struts> <package name="upload" extends="struts-default"> <!-- 注意class使用點 --> <action name="fileUploadAction" class="cn.itcast.e_fileupload.FileUpload"> <!-- 設定檔上傳的類型 --> <interceptor-ref name="defaultStack"> <param name="fileUpload.allowedExtensions">txt,jpg</param> </interceptor-ref> <result name="success">/e/success.jsp</result> <!-- 配置錯誤視圖 --> <result name="input">/e/error.jsp</result> </action> </package></struts>
struts檔案上傳
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