javaweb中的资源上传与下载

Question

求一份关于javaweb中的资源上传与下载的模块代码，，，，，，，，，，，，，

Answer 1

这个是上传的代码
package demo;

import java.io.File;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class FileUploadAction extends ActionSupport{
private File file;
private String fileContentType;//这三个参数全部不可以修改
private String fileFileName;

public File getFile() {
    return file;
}


public void setFile(File file) {
    this.file = file;
}


public String getFileContentType() {
    return fileContentType;
}


public void setFileContentType(String fileContentType) {
    this.fileContentType = fileContentType;
}


public String getFileFileName() {
    return fileFileName;
}


public void setFileFileName(String fileFileName) {
    this.fileFileName = fileFileName;
}


@Override
public String execute() throws Exception {

    String realPath = ServletActionContext.
            getServletContext().getRealPath("/wenjian");

    File mulu = new File("c:/abc");
    if(!mulu.exists()){
        mulu.mkdirs();//如果目录不存在，则创建
    }
    FileUtils.copyFile(file, new File(mulu, fileFileName));

    return SUCCESS;
}

}

action配置

/index.jsp
/index.jsp

<!-- 文件类型过滤 -->
text/plain,text/xml,image/bmp,image/png,image/gif,image/jpeg
<!-- 单个文件大小, 以字节为单位 -->
1024000

<!-- 默认拦截器必须放在fileUpload之后，否则无效 -->

    </action>

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