Java删除单个本地文件

效果图：

html:

 <div id="fileslist">
        <div class="row" style="height: 427px;overflow: auto;margin-right: -10px;float: left;width: 600px;">
	    <div class="col-sm-12">
		<div class="form-group">
		    <div class="col-sm-12 fb">
			<div class="pic">
			    <div id="gridFileslist">
				<c:forEach var="file" varStatus="status" items="${userfaces}">
				<li>
				    <div class="imgview">
					<div style="position: absolute;right: 6px;cursor: pointer;" onclick="deletefile('${file.fileurl}');"><i class="glyphicon glyphicon-trash red"></i></div>
					<img src="${file.fileurl}" >
				    </div>
				</li>
				</c:forEach>
			    </div>
			<div style="clear: both;"></div>
                    </div>
		</div>
	    </div>
	</div>
    </div>
</div>

删除事件：

function deletefile(fileurl){
	$.ajax({
		type:"post",
		url:"deletefile.do",
		data:{
			"fileurl":fileurl,
			"responseType":"ajax"
		    },
		dataType:"json",
		success:function(data){
    		    if(data.status==1){
			toastr.success('删除成功！');
			$("#fileslist").load("${ctx}/admin/core/user/uploadface.do?isjson=true&userId="+$("#studentId").val());
		    }
		}
	})
}

后台：

	@RequestMapping("deletefile.do")
	public String deletefile(String fileurl, HttpServletRequest request, HttpServletResponse response,
			org.springframework.ui.Model modelMap) {
		Response resp = new Response(request, response, modelMap);
		String fullPath = pathResolver.getPath(fileurl);
		File file = new File(fullPath);
		if (!file.isDirectory()) {
			file.delete();
		}
		return resp.post(1);
	}

 

获取路径的接口及实现方法：

public interface PathResolver {
	public String getPath(String uri);

	public String getPath(String uri, String prefix);
}

package com.course.common.web;

import java.io.File;

import javax.servlet.ServletContext;

import org.apache.commons.lang3.StringUtils;
import org.springframework.web.context.ServletContextAware;

/**
 * ServletContext路径获取实现
 * 
 */
public class ServletContextPathResolver implements PathResolver,
		ServletContextAware {
	public String getPath(String uri) {
		if (uri == null) {
			uri = "";
		}
		StringBuilder sb = new StringBuilder();
		sb.append(servletContext.getRealPath(""));
		if (!uri.startsWith("/")) {
			sb.append(File.separator);
		}
		sb.append(uri.replace('/', File.separatorChar));
		return sb.toString();
	}

	public String getPath(String uri, String prefix) {
		if (uri == null) {
			uri = "";
		}
		StringBuilder sb = new StringBuilder();
		if (StringUtils.startsWith(prefix, "file:")) {
			sb.append(prefix.substring(5));
		} else {
			sb.append(servletContext.getRealPath(""));
			if (StringUtils.isNotBlank(prefix)) {
				sb.append(prefix.replace('/', File.separatorChar));
			}
		}
		if (!uri.startsWith("/")) {
			sb.append(File.separator);
		}
		sb.append(uri.replace('/', File.separatorChar));
		return sb.toString();
	}

	private ServletContext servletContext;

	public void setServletContext(ServletContext servletContext) {
		this.servletContext = servletContext;
	}
}