spring+springmvc+redis配置

其他 2018-05-20 12:11:24 阅读次数: 3

主要逻辑代码在com.l.token包中
这里写图片描述

首先引入相关依赖，其中有一些没有用到的依赖

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.l</groupId>
    <artifactId>SpringProject</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringProject Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
        <spring.version>4.3.12.RELEASE</spring.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</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-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.1</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.9</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.10</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.10</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.7.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.8.1</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
    <build>
        <finalName>SpringProject</finalName>
    </build>
</project>

配置web.xml，加载spring-context.xml和spring-mvc.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
         version="2.4">
    <display-name>Archetype Created Web Application</display-name>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-context.xml</param-value>
    </context-param>

    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <servlet>
        <servlet-name>mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>
</web-app>

新建spring-context.xml文件配置，扫描除去@controller注解的类

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
      http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd">


    <!-- 对包中的所有类进行扫描，以完成Bean创建和自动依赖注入的功能 需要更改 -->
    <context:component-scan base-package="com.l">
        <!-- 排除不扫描的,controller放在子容器springmvc的配置文件中 -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>


    <!-- 引入同文件夹下的redis属性配置文件 -->
    <import resource="redis-context.xml"/>

</beans>

spring-mvc.xml，要注意controller的重复扫描注入

<?xml version="1.0" encoding="UTF-8"?>
<beans
        xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.l" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!-- 配置视图解析器，把控制器的逻辑视频映射为真正的视图 -->
    <!-- /WEB-INF/jsp/start.jsp -->
    <!--<bean class="org.springframework.web.servlet.view.UrlBasedViewResolver">-->
        <!--<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>-->
        <!--<property name="prefix" value="/WEB-INF/jsp/"/>-->
        <!--<property name="suffix" value=".jsp"/>-->
    <!--</bean>-->

</beans>

配置redis连接，可以新建redis.properties文件进行变量引用

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
      http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http://www.springframework.org/schema/tx
      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!-- scanner redis properties  -->
    <context:property-placeholder location="classpath:redis.properties" ignore-unresolvable="true"/>
    <!--（1）如果你有多个数据源需要通过<context:property-placeholder管理，且不愿意放在一个配置文件里，那么一定要加上ignore-unresolvable=“true"-->
    <!--（2）注意新版的（具体从哪个版本开始不清楚，有兴趣可以查一下）JedisPoolConfig的property name，不是maxActive而是maxTotal，而且没有maxWait属性，建议看一下Jedis源码。-->
    <!-- redis连接池 -->
    <bean id="jedisConfig" class="redis.clients.jedis.JedisPoolConfig">
        <!--<property name="maxTotal" value="${redis.maxActive}"/>
        <property name="maxWaitMillis" value="${redis.maxWait}"/>
        <property name="maxIdle" value="${redis.maxIdle}"/>
        <property name="testOnBorrow" value="${redis.testOnBorrow}"/>-->
        <property name="maxIdle" value="300"/>
        <property name="maxTotal" value="1024"/>
        <property name="maxWaitMillis" value="1000"/>
        <property name="testOnBorrow" value="true"/>
    </bean>


    <!-- redis连接工厂 -->
    <bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <!--<property name="hostName" value="${redis.host}"/>
        <property name="password" value="${redis.password}"/>
        <property name="poolConfig" ref="jedisConfig"/>
        <property name="port" value="${redis.port}"/>-->
        <property name="hostName" value="127.0.0.1"/>
        <property name="port" value="6379"/>
        <property name="poolConfig" ref="jedisConfig"/>
        <property name="usePool" value="true"/>
    </bean>

    <bean id="stringRedisSerializer" class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="connectionFactory"/>
        <property name="keySerializer" ref="stringRedisSerializer"/>
        <property name="hashKeySerializer" ref="stringRedisSerializer"/>
        <property name="valueSerializer" ref="stringRedisSerializer"/>
    </bean>

    <!-- redis操作模板，这里采用尽量面向对象的模板 -->
    <!--   <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
           <property name="connectionFactory" ref="connectionFactory"/>
           &lt;!&ndash;     如果不配置Serializer，那么存储的时候只能使用String，如果用对象类型存储，那么会提示错误 can't cast to String！！！&ndash;&gt;
           <property name="keySerializer">
               <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
           </property>
           <property name="valueSerializer">
               <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
           </property>
           &lt;!&ndash;开启事务&ndash;&gt;
           <property name="enableTransactionSupport" value="true"/>

       </bean>-->
</beans>

TokenDao，注入redis模板，进行数据操作

package com.l.token.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Repository;

import java.util.concurrent.TimeUnit;

@Repository
public class TokenDao {
    private final RedisTemplate<String, Object> redisTemplate;
    private final static long validTime = 60;//设置时效

    @Autowired
    public TokenDao(RedisTemplate redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    public void set(String key, Object value) {
        this.redisTemplate.boundValueOps(key).set(value, validTime, TimeUnit.SECONDS);
    }

    public String get(String token) {
        System.out.println("in");
        return redisTemplate.opsForValue().get(token).toString();
    }

    public void delete(String token) {
        redisTemplate.delete(token);
    }
}

dao层注入service层

package com.l.token.service;

import com.l.token.dao.TokenDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class TokenSevice {
    private TokenDao tokenDao;

    @Autowired
    public TokenSevice(TokenDao tokenDao) {
        this.tokenDao = tokenDao;
    }

    public String get(String key) {
        return tokenDao.get(key);
    }

    public void set(String key, Object value) {
        tokenDao.set(key, value);
    }

}

**@Controller和@RestController的区别
官方文档：
@RestController is a stereotype annotation that combines @ResponseBody and @Controller.
意思是：
@RestController注解相当于@ResponseBody ＋ @Controller合在一起的作用。
1)如果只是使用@RestController注解Controller，则Controller中的方法无法返回jsp页面，配置的视图解析器InternalResourceViewResolver不起作用，返回的内容就是Return 里的内容。
例如：本来应该到success.jsp页面的，则其显示success.
2)如果需要返回到指定页面，则需要用 @Controller配合视图解析器InternalResourceViewResolver才行。
3)如果需要返回JSON，XML或自定义mediaType内容到页面，则需要在对应的方法上加上@ResponseBody注解。**

package com.l.token.controller;

import com.l.token.service.TokenSevice;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@CrossOrigin
@RequestMapping("/api")
public class TokenController {
    private TokenSevice tokenSevice;

    @Autowired
    public TokenController(TokenSevice tokenSevice) {
        this.tokenSevice = tokenSevice;
    }

    @RequestMapping(value = "token/{name}")
    public void get(@PathVariable String name) {
        System.out.println(tokenSevice.get(name));
    }

    @RequestMapping("/{value}")
    public String set(@PathVariable String value) {
        System.out.println(value);
        return tokenSevice.get(value);
    }
}

测试http://localhost:8080/api/aaa1 成功 后续可以将返回页面完善

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