httpclient 简单封装

怒放de生命2010

1598人浏览 · 2019-10-23 10:43:22

怒放de生命2010 · 2019-10-23 10:43:22 发布

文章目录

项目目录

在这里插入图片描述

get测试

public class DoGET {

    public static void main(String[] args) throws Exception {

        // 创建Httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();

        // 创建http GET请求
//        HttpGet httpGet = new HttpGet("http://localhost:8081/item/list?page=1&rows=30");
        HttpGet httpGet = new HttpGet("http://www.baidu.com");

        CloseableHttpResponse response = null;
        try {
            // 执行请求
            response = httpclient.execute(httpGet);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                String content = EntityUtils.toString(response.getEntity(), "UTF-8");
                System.out.println("内容长度：" + content.length());
                System.out.println(content);//响应的内容
            }
        } finally {
            if (response != null) {
                response.close();
            }
            httpclient.close();
        }

    }

get带参数

public class DoGETParam {

	public static void main(String[] args) throws Exception {

		// 创建Httpclient对象
		CloseableHttpClient httpclient = HttpClients.createDefault();

		// 定义请求的参数
		 new URIBuilder("http://localhost:8081/item/list").addParameter("a", "1").addParameter("a", "2");
		 new URIBuilder("http://localhost:8081/item/list").setParameter("a", "1").setParameter("a", "2");
		 //http://localhost:8081/item/list?a=1&a=2
		 //http://localhost:8081/item/list?a=2
		URI uri = new URIBuilder("http://localhost:8081/item/list").setParameter("page", "3").setParameter("rows", "10")
				.build();

		System.out.println(uri);

		// 创建http GET请求
		HttpGet httpGet = new HttpGet(uri);

		CloseableHttpResponse response = null;
		try {
			// 执行请求
			response = httpclient.execute(httpGet);
			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == 200) {
				String content = EntityUtils.toString(response.getEntity(), "UTF-8");
				System.out.println(content);
			}
		} finally {
			if (response != null) {
				response.close();
			}
			httpclient.close();
		}

	}

}

post测试

public class DoPOST {

    public static void main(String[] args) throws Exception {

        // 创建Httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();

        // 创建http POST请求
        HttpPost httpPost = new HttpPost("http://www.oschina.net/");
        httpPost.setHeader("User-Agent", "");
        CloseableHttpResponse response = null;
        try {
            // 执行请求
            response = httpclient.execute(httpPost);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                String content = EntityUtils.toString(response.getEntity(), "UTF-8");
                System.out.println(content);
            }
        } finally {
            if (response != null) {
                response.close();
            }
            httpclient.close();
        }

    }

}

post带参数测试


public class DoPOSTParam {

    public static void main(String[] args) throws Exception {

        // 创建Httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();

        // 创建http POST请求
        
        //  添加商品的urL   :/item/save
        HttpPost httpPost = new HttpPost("http://localhost:8081/item/save");

        //cid=560&title=httpclient&sellPoint=asfdafaf
        
        // 设置2个post参数，一个是scope、一个是q
        List<NameValuePair> parameters = new ArrayList<NameValuePair>(0);
        parameters.add(new BasicNameValuePair("cid", "560"));
        parameters.add(new BasicNameValuePair("title", "httpclient"));
        parameters.add(new BasicNameValuePair("sellPoint", "asfdafaf"));
        parameters.add(new BasicNameValuePair("price", "1200"));
        parameters.add(new BasicNameValuePair("num", "213"));
        // 构造一个form表单式的实体
        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters);
        // 将请求实体设置到httpPost对象中
        httpPost.setEntity(formEntity);

        CloseableHttpResponse response = null;
        try {
            // 执行请求
            response = httpclient.execute(httpPost);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                String content = EntityUtils.toString(response.getEntity(), "UTF-8");
                System.out.println(content);
            }
        } finally {
            if (response != null) {
                response.close();
            }
            httpclient.close();
        }

    }

}

封装返回码

public class HttpResult {
	private Integer code;//响应的状态码 200 201.。
	private String body;//响应体 （响应的内容）
	public Integer getCode() {
		return code;
	}
	public void setCode(Integer code) {
		this.code = code;
	}
	public String getBody() {
		return body;
	}
	public void setBody(String body) {
		this.body = body;
	}
	public HttpResult(Integer code, String body) {
		super();
		this.code = code;
		this.body = body;
	}
	
	public HttpResult() {
		
	}
	
}

封装httpclient工具类


public class APIService {
	//1.不带参数的get请求的方法
	/**
	 * 
	 * @param url
	 * @return
	 * @throws Exception
	 */
	public HttpResult doGet(String url) throws Exception{
		return doGet(url,null);
	}
	
	
	
	//2.带参数的get请求的方法
	/**
	 * 
	 * @param url  请求的URL
	 * @param map  请求传递的参数
	 * @return
	 * @throws Exception
	 */
	public HttpResult doGet(String url,Map<String, Object> map) throws Exception{
		
		//1.创建httpclient的对象  
		CloseableHttpClient client = HttpClients.createDefault();
		//2.创建httpget get请求对象
		URIBuilder builder =  new URIBuilder(url);//设置URL
		//遍历参数，设置参数的值
		if(map!=null){
			for (Map.Entry<String, Object> entry : map.entrySet()) {
				
				builder.setParameter(entry.getKey(), entry.getValue().toString());
			}
		}
		URI uri = builder.build();
		HttpGet httpGet = new HttpGet(uri);
		//3.执行请求
		CloseableHttpResponse response = client.execute(httpGet);
		//4.获取响应的结果 封装到httpresult中
		Integer code = response.getStatusLine().getStatusCode();//状态码
		String body =null;
		if(response.getEntity()!=null){
			body = EntityUtils.toString(response.getEntity(), "utf-8");
		}
		HttpResult result = new HttpResult(code, body);
		return result;
	}
	
	
	//3.不带参数的post请求的方法
	public HttpResult doPost(String url) throws Exception{
		return doPost(url,null);
	}
	//4.带参数的post请的方法
	public HttpResult doPost(String url,Map<String, Object> map) throws Exception{
		//1. 创建httpclient 对象
		CloseableHttpClient client = HttpClients.createDefault();
		
		//2.创建httppost 请求对象
		
		HttpPost httpPost = new HttpPost(url);
		
		if(map!=null){
			//遍历参数的map集合  设置参数列表
			List<NameValuePair> parameters = new ArrayList<>();
			
			for (Map.Entry<String, Object> entry : map.entrySet()) {
				parameters.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
			}
			//创建表单实体对象，将参数设置到表单实体中
			UrlEncodedFormEntity encodedFormEntity = new UrlEncodedFormEntity(parameters);
			
			//设置表单实体到httpost请求对象中
			httpPost.setEntity(encodedFormEntity);
		}
		
		//3.执行请求
		CloseableHttpResponse response = client.execute(httpPost);
		//4.获取响应结果，封装到httpresult中
		Integer code = response.getStatusLine().getStatusCode();//状态码
		String body = null;
		if(response.getEntity()!=null){
			body =  EntityUtils.toString(response.getEntity(), "utf-8");
		}
		//返回httpresult
		HttpResult result = new HttpResult(code, body);
		return result;
	}
	
	
	//put delete
}

测试类


public class TestAPIService {

	@Test
	public void testGet() throws Exception{
		APIService service = new APIService();
		//HttpResult doGet = service.doGet("http://www.163.com");
		Map<String, Object> map  = new HashMap<>();
		map.put("page", "1");
		map.put("rows", "5");
		HttpResult doGet = service.doGet("http://localhost:8081/item/list", map);
		System.out.println(doGet.getBody());
		System.out.println(doGet.getCode());
	}
	@Test
	public void test() throws Exception{
		APIService service = new APIService();
		//HttpResult doGet = service.doGet("http://www.163.com");
		Map<String, Object> map  = new HashMap<>();
//		map.put("page", "1");
//		map.put("rows", "60");
//		HttpResult doGet = service.doGet("http://localhost:8081/item/list", map);
		
		//HttpResult doPost = service.doPost("http://www.baidu.com");
		
	       map.put("cid","560");
	       map.put("title", "httpclient2");
	       map.put("sellPoint", "asfdafaf");
	       map.put("price", "1200");
	       map.put("num", "213");
		HttpResult doPost = service.doPost("http://localhost:8081/item/save", map);
		
		System.out.println(doPost.getBody());
		System.out.println(doPost.getCode());
		
		
		
	}
}

itheima-httpclient的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>itheima-parent</artifactId>
        <groupId>com.itheima</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../itheima-parent/pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>itheima-httpclient</artifactId>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/junit/junit -->


        <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>

        </dependency>

    </dependencies>

</project>

parent的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itheima</groupId>
    <artifactId>itheima-parent</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>

    <!-- 集中定义依赖版本号 -->
    <properties>
        <junit.version>4.12</junit.version>
        <spring.version>4.2.4.RELEASE</spring.version>
        <mybatis.version>3.2.8</mybatis.version>
        <mybatis.spring.version>1.2.2</mybatis.spring.version>
        <mybatis.paginator.version>1.2.15</mybatis.paginator.version>
        <mysql.version>5.1.32</mysql.version>
        <slf4j.version>1.6.4</slf4j.version>
        <jackson.version>2.4.2</jackson.version>
        <druid.version>1.0.9</druid.version>
        <httpclient.version>4.3.5</httpclient.version>
        <jstl.version>1.2</jstl.version>
        <servlet-api.version>2.5</servlet-api.version>
        <jsp-api.version>2.0</jsp-api.version>
        <joda-time.version>2.5</joda-time.version>
        <commons-lang3.version>3.3.2</commons-lang3.version>
        <commons-io.version>1.3.2</commons-io.version>
        <commons-net.version>3.3</commons-net.version>
        <pagehelper.version>3.4.2-fix</pagehelper.version>
        <jsqlparser.version>0.9.1</jsqlparser.version>
        <commons-fileupload.version>1.3.1</commons-fileupload.version>
        <jedis.version>2.7.2</jedis.version>
        <solrj.version>4.10.3</solrj.version>
        <dubbo.version>2.5.3</dubbo.version>
        <zookeeper.version>3.4.7</zookeeper.version>
        <zkclient.version>0.1</zkclient.version>
        <activemq.version>5.13.0</activemq.version>
        <freemarker.version>2.3.23</freemarker.version>
        <quartz.version>2.2.2</quartz.version>
    </properties>
    <dependencyManagement>

        <dependencies>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
            </dependency>
            <!-- 时间操作组件 -->
            <dependency>
                <groupId>joda-time</groupId>
                <artifactId>joda-time</artifactId>
                <version>${joda-time.version}</version>
            </dependency>
            <!-- Apache工具组件 -->
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>${commons-lang3.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-net</groupId>
                <artifactId>commons-net</artifactId>
                <version>${commons-net.version}</version>
            </dependency>
            <!-- Jackson Json处理工具包 -->
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>${jackson.version}</version>
            </dependency>
            <!-- httpclient -->
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>${httpclient.version}</version>
            </dependency>
            <!-- quartz任务调度框架 -->
            <dependency>
                <groupId>org.quartz-scheduler</groupId>
                <artifactId>quartz</artifactId>
                <version>${quartz.version}</version>
            </dependency>
            <!-- 单元测试 -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <!-- 日志处理 -->
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>${slf4j.version}</version>
            </dependency>
            <!-- Mybatis -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>${mybatis.spring.version}</version>
            </dependency>
            <!-- 暂时没有用到 -->
            <dependency>
                <groupId>com.github.miemiedev</groupId>
                <artifactId>mybatis-paginator</artifactId>
                <version>${mybatis.paginator.version}</version>
            </dependency>
            <!-- 分页插件pagehelper -->
            <dependency>
                <groupId>com.github.pagehelper</groupId>
                <artifactId>pagehelper</artifactId>
                <version>${pagehelper.version}</version>
            </dependency>

            <!-- MySql -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <!-- 连接池 -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <!-- Spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aspects</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jms</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context-support</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <!-- JSP相关 -->
            <dependency>
                <groupId>jstl</groupId>
                <artifactId>jstl</artifactId>
                <version>${jstl.version}</version>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
                <version>${servlet-api.version}</version>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>jsp-api</artifactId>
                <version>${jsp-api.version}</version>
                <scope>provided</scope>
            </dependency>
            <!-- 文件上传组件 -->
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>${commons-fileupload.version}</version>
            </dependency>
            <!-- Redis客户端 -->
            <dependency>
                <groupId>redis.clients</groupId>
                <artifactId>jedis</artifactId>
                <version>${jedis.version}</version>
            </dependency>
            <!-- solr客户端 -->
            <dependency>
                <groupId>org.apache.solr</groupId>
                <artifactId>solr-solrj</artifactId>
                <version>${solrj.version}</version>
            </dependency>
            <!-- dubbo相关 -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>dubbo</artifactId>
                <version>${dubbo.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>${zookeeper.version}</version>
            </dependency>
            <dependency>
                <groupId>com.github.sgroschupf</groupId>
                <artifactId>zkclient</artifactId>
                <version>${zkclient.version}</version>
            </dependency>
            <!-- activemq -->
            <dependency>
                <groupId>org.apache.activemq</groupId>
                <artifactId>activemq-all</artifactId>
                <version>${activemq.version}</version>
            </dependency>
            <dependency>
                <groupId>org.freemarker</groupId>
                <artifactId>freemarker</artifactId>
                <version>${freemarker.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <!-- 资源文件拷贝插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.7</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <!-- java编译插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
        <!-- 统一管理版本 -->
        <pluginManagement>
            <plugins>
                <!-- 配置Tomcat插件 -->
                <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <version>2.2</version>
                </plugin>

                <!-- 配置打包时跳过测试 ，首次配置使用的时候会自动联网进行下载 -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.12.4</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

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