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httpclient 简单封装

2022-10-09 283
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简介： httpclient 简单封装

项目目录

1dc618a0ed9580ce8bfa6facb208c08f.png

5d4c6812c8535adbb050f4ddf2e1bce8.png


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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