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redis 缓存报错

1

2

redis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

<context:property-placeholder location="classpath:redis.properties" ignore-unresolvable="true"/>

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="${redis.maxIdle}"/>
        <property name="maxWaitMillis" value="${redis.maxWait}"/>
        <property name="testOnBorrow" value="${redis.testOnBorrow}"/>
    </bean>

<bean id="jedisConnectionFactory"
          class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.hostName}"/>
        <property name="port" value="${redis.port}"/>
        <property name="poolConfig" ref="jedisPoolConfig"/>
        <property name="timeout" value="${redis.timeout}"/>
    </bean>

<bean id="stringRedisTemplate"
          class="org.springframework.data.redis.core.StringRedisTemplate">
            <property name="connectionFactory" ref="jedisConnectionFactory"/>

<property name="keySerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>
        <property name="valueSerializer">
            <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
        </property>
    </bean>

</beans>

idea 2018.1.2   spring 4.13
  
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.8.1</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-redis</artifactId>
      <version>1.7.2.RELEASE</version>
    </dependency>

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</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-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${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-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>

<dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib-nodep</artifactId>
      <version>2.2</version>
    </dependency>

<dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.11</version>
    </dependency>

<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.39</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.1</version>
    </dependency>
    
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>

该问题已被官方收录

SpringRMI配置客户端时一直报空指针

2

springRMI 分布式

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

public class RMIClient {


     ESService eSService;

     JIService jiService;

     SNService snService;

     UserService userService;

    public void setJiService(JIService jiService) {
        this.jiService = jiService;
    }

    public void setSnService(SNService snService) {
        this.snService = snService;
    }

    public void setUserService(UserService userService) {
        this.userService = userService;
    }


    public void setEsService(ESService eSService) {
        this.eSService = eSService;
    }


    public ESService geteSService() {
        return eSService;
    }

    public JIService getJiService() {
        return jiService;
    }

    public SNService getSnService() {
        return snService;
    }

    public UserService getUserService() {
        return userService;
    }

    public static RMIClient server() {

        ApplicationContext context;

        RMIClient rmiClient = new RMIClient();

        int i = Math.random() > 0.5 ? 1 : 0;
        String a = "ServerA";
        String b = "ServerB";
        String name[] = {a, b};
        Redis redis = new Redis();
        String serverName = name[i];
        String another = name[1 - i];
        System.out.println("选择服务器名称" + serverName);
        if (redis.getCacheObject(serverName) == null) {
            System.out.println(serverName + "服务器异常，重新选择服务器名称" + another);
            if (redis.getCacheObject(another) == null) {
                System.out.println("服务器都坏了");
            } else {
                context = new ClassPathXmlApplicationContext(another + ".xml");
                rmiClient = (RMIClient) context.getBean("rmiClient");
                rmiClient.run();
            }
        } else {
            context = new ClassPathXmlApplicationContext(serverName + ".xml");
            rmiClient = (RMIClient) context.getBean("rmiClient");
            rmiClient.run();

        }
        return rmiClient;
    }

该问题已被官方收录

Springboot整合redis出错。NOAUTH Authenticatio

1

2

springboot

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

关于spring配置文件applicationContext.xml表头

4

2

mybatis spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

任务五JWT工具类的书写

3

2

会话管理

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

package com.POJO;

import com.sun.org.apache.xml.internal.security.algorithms.SignatureAlgorithm;

import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import java.security.Key;
import java.util.Date;

/**
 * @author: 曹樾
 * @program: task5
 * @description: JWT生成token
 * @create: 2018/4/27 下午8:14
 */

public class JwtHelper {
    private final static String base64Secret = "MDk4ZjZiY2Q0NjIxZDM3M2NhZGU0ZTgzMjYyN2I0ZjY=";
    private final static int expiresSecond = 172800000;
    
    public static Claims parseJWT(String jsonWebToken) {
        try {
            Claims claims = Jwts.parser()
                    .setSigningKey(DatatypeConverter.parseBase64Binary(base64Secret))
                    .parseClaimsJws(jsonWebToken).getBody();
            return claims;
        } catch (Exception ex) {
            return null;
        }
    }
    
    public static String createJWT(String username, String roles, String privileges) {
        SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
        
        long nowMillis = System.currentTimeMillis();
        Date now = new Date(nowMillis);
        
        //生成签名密钥
        byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary(base64Secret);
        Key signingKey = new SecretKeySpec(apiKeySecretBytes, signatureAlgorithm.getJcaName());
        
        //添加构成JWT的参数
        JwtBuilder builder = Jwts.builder().setHeaderParam("typ", "JWT")
                .claim("user_name", username)
                .claim("user_role", roles)
                .claim("user_privilege", privileges)
                .signWith(signatureAlgorithm, signingKey);
        //添加Token过期时间
        if (expiresSecond >= 0) {
            long expMillis = nowMillis + expiresSecond;
            Date exp = new Date(expMillis);
            builder.setExpiration(exp).setNotBefore(now);
        }
        
        //生成JWT
        return builder.compact();
    }
}

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SSM框架下页面跳转为什么失败？

0

2

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

controller部分：
@Controller
@RequestMapping("/paper")
public class PaperController {
    @Autowired
    private PaperService paperService;

    @RequestMapping("/allPaper")
    public String list(Model model) {
        List<Paper> list = paperService.queryAllPaper();
        model.addAttribute("list", list);
        return "allPaper";
    }

    @RequestMapping("toAddPaper")
    public String toAddPaper() {
        return "addPaper";
    }

    @RequestMapping("/addPaper")
    public String addPaper(Paper paper) {
        paperService.addPaper(paper);
        return "redirect:/paper/allPaper";
    }

    @RequestMapping("/del/{paperId}")
    public String deletePaper(@PathVariable("paperId") Long id) {
        paperService.deletePaperById(id);
        return "redirect:/paper/allPaper";
    }

    @RequestMapping("toUpdatePaper")
    public String toUpdatePaper(Model model, Long id) {
        model.addAttribute("paper", paperService.queryById(id));
        return "updatePaper";
    }

    @RequestMapping("/updatePaper")
    public String updatePaper(Model model, Paper paper) {
        paperService.updatePaper(paper);
        paper = paperService.queryById(paper.getPaperId());
        model.addAttribute("paper", paper);
        return "redirect:/paper/allPaper";
    }
}

ioc和di是什么意思

4

2

spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图