• RedisTemplate连接密码设置教程

    最近在一个项目中使用Redis保存Token时，出现连接Redis报错的情况

    1. org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to localhost:6379
    2.  
    3. 	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1689)
    4. 	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1597)
    5. 	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1383)
    6. 	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1366)
    7. 	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:1093)
    8. 	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:421)
    9. 	at org.springframework.data.redis.core.RedisConnectionUtils.fetchConnection(RedisConnectionUtils.java:193)
    10. 	at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:144)
    11. 	at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:105)
    12. 	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:211)
    13. 	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:191)
    14. 	at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:97)
    15. 	at org.springframework.data.redis.core.DefaultValueOperations.set(DefaultValueOperations.java:305)
    16. 	at com.zhangxi.SpringDataRedisTest.testString(SpringDataRedisTest.java:36)
    17. 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    18. 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    19. 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    20. 	at java.lang.reflect.Method.invoke(Method.java:498)
    21. 	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)
    22. 	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
    23. 	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
    24. 	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
    25. 	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
    26. 	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
    27. 	at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
    28. 	at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    29. 	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
    30. 	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
    31. 	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
    32. 	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
    33. 	at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    34. 	at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
    35. 	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214)
    36. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    37. 	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210)
    38. 	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
    39. 	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66)
    40. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
    41. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    42. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    43. 	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    44. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    45. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    46. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    47. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    48. 	at java.util.ArrayList.forEach(ArrayList.java:1257)
    49. 	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
    50. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
    51. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    52. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    53. 	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    54. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    55. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    56. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    57. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    58. 	at java.util.ArrayList.forEach(ArrayList.java:1257)
    59. 	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
    60. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
    61. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    62. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    63. 	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    64. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    65. 	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    66. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    67. 	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    68. 	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
    69. 	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    70. 	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
    71. 	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
    72. 	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
    73. 	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
    74. 	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)......

    整理一下连接密码步骤：

    实现RedisTemplate连接密码设置的步骤概览：

    1.     section 步骤一: 导入依赖
    2.     section 步骤二: 配置连接信息
    3.     section 步骤三: 创建Redis连接工厂
    4.     section 步骤四: 创建RedisTemplate实例

    步骤一: 导入依赖

    首先，你需要在你的项目中导入以下依赖：

    1. <dependency>
    2.     <groupId>org.springframework.boot</groupId>
    3.     <artifactId>spring-boot-starter-data-redis</artifactId>
    4. </dependency>

    步骤二: 配置连接信息

    在你的Spring Boot项目的配置文件（如application.yml或application.properties）中，添加Redis连接相关的配置信息。

    示例配置文件（application.yml）：

    1. spring:
    2.   redis:
    3.     host: localhost
    4.     port: 6379
    5.     password: your_password

    上述配置中，你需要将your_password替换为你实际的Redis连接密码。

    步骤三: 创建Redis连接工厂

    在你的Java代码中，创建Redis连接工厂对象，并配置连接信息。

    1. import org.springframework.beans.factory.annotation.Value;
    2. import org.springframework.context.annotation.Bean;
    3. import org.springframework.context.annotation.Configuration;
    4. import org.springframework.data.redis.connection.RedisConnectionFactory;
    5. import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
    6. import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
    7.  
    8. @Configuration
    9. public class RedisConfig {
    10.     
    11.     @Value("${spring.redis.host}")
    12.     private String redisHost;
    13.     
    14.     @Value("${spring.redis.port}")
    15.     private int redisPort;
    16.     
    17.     @Value("${spring.redis.password}")
    18.     private String redisPassword;
    19.     
    20.     @Bean
    21.     public RedisConnectionFactory redisConnectionFactory() {
    22.         RedisStandaloneConfiguration redisConfig = new RedisStandaloneConfiguration(redisHost, redisPort);
    23.         redisConfig.setPassword(redisPassword);
    24.         return new LettuceConnectionFactory(redisConfig);
    25.     }
    26. }

    上述代码中，RedisConfig类使用@Configuration注解表示这是一个配置类。通过@Value注解获取配置文件中的Redis连接信息，并创建RedisStandaloneConfiguration对象来配置连接信息。然后，使用LettuceConnectionFactory来创建RedisConnectionFactory对象。

    步骤四: 创建RedisTemplate实例

    在你的Java代码中，创建RedisTemplate实例，并设置Redis连接工厂。

    1. import org.springframework.beans.factory.annotation.Autowired;
    2. import org.springframework.context.annotation.Bean;
    3. import org.springframework.context.annotation.Configuration;
    4. import org.springframework.data.redis.connection.RedisConnectionFactory;
    5. import org.springframework.data.redis.core.RedisTemplate;
    6.  
    7. @Configuration
    8. public class RedisConfig {
    9.  
    10.     @Autowired
    11.     private RedisConnectionFactory redisConnectionFactory;
    12.  
    13.     @Bean
    14.     public RedisTemplate<String, Object> redisTemplate() {
    15.         RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
    16.         redisTemplate.setConnectionFactory(redisConnectionFactory);
    17.         return redisTemplate;
    18.     }
    19. }

    上述代码中，通过@Autowired注解注入RedisConnectionFactory对象，然后在redisTemplate()方法中创建RedisTemplate实例，并设置连接工厂。

    END

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  • 原文地址：https://blog.csdn.net/weixin_46039745/article/details/134282517