爬虫基础之HTTP基本原理

1.Maven的第一个项目

1.1.按照约定创建Maven项目目录

 1.2.在项目Hello根目录建立pom.xml

<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.hello.maven</groupId>
  <artifactId>Hello</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>Hello</name>
  
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.9</version>
			<scope>test</scope>
		</dependency>		
		
	</dependencies>
</project>

1.3.创建Hello.java文件

在src/main/java/com/hello/maven目录下新建文件Hello.java

package com.hello.maven;
public class Hello {
	public String sayHello(String name){
		return "Hello "+name+"!";
	}
}

1.4.创建HelloTest.java文件

在src/test/java/com/hello/maven目录下新建测试文件HelloTest.java

package com.hello.maven;
import org.junit.Test;
import static junit.framework.Assert.*;
public class HelloTest {
	@Test
	public void testHello(){
		Hello hello = new Hello();
		String results = hello.sayHello("maven");
		assertEquals("Hello maven!",results);		
	}
}

1.5.进行Maven的项目操作

2.Maven的第二个项目

2.1.按照约定创建Maven项目目录

2.2.在项目HelloFriend根目录建立pom.xml

<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.hello.maven</groupId>
  <artifactId>HelloFriend</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>HelloFriend</name>
  
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.9</version>
			<scope>test</scope>
		</dependency>		
		
		<dependency>
			<groupId>com.qcby.maven</groupId>
			<artifactId>Hello</artifactId>
			<version>0.0.1-SNAPSHOT</version>
			<scope>compile</scope>
		</dependency>		
		
	</dependencies>
</project>

2.3.创建HelloFriend.java文件

在src/main/java/com/hello/maven目录下新建文件HelloFriend.java

package com.hello.maven;

public class HelloFriend {

	public String sayHelloToFriend(String name){
		
		Hello hello = new Hello();
		String str = hello.sayHello(name)+" I am "+this.getMyName();
		System.out.println(str);
		return str;
	}
	
	public String getMyName(){
		return "John";
	}

}

2.4.创建HelloFriendTest.java文件

在src/test/java/com/hello/maven目录下新建测试文件HelloFriendTest.java

package com.hello.maven;

import static junit.framework.Assert.assertEquals;

import org.junit.Test;

public class HelloFriendTest {
	@Test
	public void tesHelloFriend(){
		HelloFriend helloFriend = new HelloFriend();
		String results = helloFriend.sayHelloToFriend("zhangsan");
		assertEquals("Hello zhangsan! I am John",results);
	}

}