目录

1.依赖安装

2. upload文件代码

3.文件上传代码

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1.依赖安装

文件上传处需要使用httpcomponents库,需要在Maven的pom.xml文件中导入依赖

java"><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpmime</artifactId><version>4.5.8</version>
</dependency>

2. upload文件代码

<?php
if (($_FILES["file"]["type"] == "image/gif" || $_FILES["file"]["type"] == "image/jpeg" || $_FILES["file"]["type"] == "image/png") && $_FILES["file"]["size"] < 20000) {if ($_FILES["file"]["error"] > 0) {echo "Return Code: " . $_FILES["file"]["error"] . "<br />";echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";} else {if (file_exists("uploads/" . $_FILES["file"]["name"])) {echo $_FILES["file"]["name"] . " already exists. ";} else {move_uploaded_file($_FILES["file"]["tmp_name"], "uploads/" . $_FILES["file"]["name"]);echo "Stored in: " . "uploads/" . $_FILES["file"]["name"];}}
} else {echo "Invalid file";
}
?>

3.文件上传代码

        还是在之前的基础上,增加了一个文件上传的文件类,请求方式通过POST方式,使用try-catch处理异常.

java">package com.deger;import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;import java.io.File;
import java.io.IOException;public class HttpClientUpload {public static void main(String[] args){System.out.println(DoUpload("http://127.0.0.1/upload.php"));}public static String DoUpload(String url){String res = null;CloseableHttpClient httpClient = null;CloseableHttpResponse response = null;httpClient = HttpClients.createDefault();//上传的文件的本地路径File file = new File("D:\\phpstudy_pro\\WWW\\shell.php");MultipartEntityBuilder builder = MultipartEntityBuilder.create();
//        builder.addPart("file", new FileBody(file, ContentType.create("image/jpeg"), file.getName()));//更改上传文件的名称builder.addPart("file", new FileBody(file, ContentType.create("image/jpeg"), "shell.jpg"));HttpPost httpPost = new HttpPost(url);httpPost.setEntity(builder.build());try {response = httpClient.execute(httpPost);if (response.getStatusLine().getStatusCode() == 200) {res = EntityUtils.toString(response.getEntity());}} catch (IOException e) {throw new RuntimeException(e);}finally {try {httpClient.close();response.close();} catch (IOException e) {e.printStackTrace();}}return res;}
}