登录
当前位置： 首页 > 知识库问答 >
问题：

如何构建Spring Boot Atomikos测试配置？

国阳
2023-03-14

如何创建合适的测试环境，使之能够在同一应用程序中使用数据库层测试和RESTendpoint测试？

>

  • 创建一个用于所有测试的测试配置（因为Spring缓存测试上下文）。但这不起作用。我认为这是因为@Controller中的模拟bean中断了重用Spring测试上下文的能力。我在测试中使用持久性映射器组件在一个测试中被模拟，同时在其他测试中使用真实实例。所以我看到每个测试类都运行在它自己的测试上下文中。

    在database@configuration类上使用@lazy正如我所想的那样，这将确保bean只在首次调用时被实例化，并在以后的调用中被重用。但这也行不通。

    在这里，我做了示例项目链接来说明这个问题。存储库包括MySQL数据库转储：https://github.com/pavelmorozov/atomikosconfig

    java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
    at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189)
    at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:539)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:761)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:461)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:207)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'demoController': Unsatisfied dependency expressed through field 'firstMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'firstMapper' defined in file [/home/pm/Documents/workspace-sts-3.9.1.RELEASE/AtomikosConfig/target/classes/com/example/demo/persistence/mapper/first/FirstMapper.class]: Cannot resolve reference to bean 'firstSqlSessionFactory' while setting bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'firstSqlSessionFactory' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Unsatisfied dependency expressed through method 'firstSqlSessionFactory' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'firstDataSource' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Invocation of init method failed; nested exception is com.atomikos.jdbc.AtomikosSQLException: Cannot initialize AtomikosDataSourceBean
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:120)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
    ... 25 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'firstMapper' defined in file [/home/pm/Documents/workspace-sts-3.9.1.RELEASE/AtomikosConfig/target/classes/com/example/demo/persistence/mapper/first/FirstMapper.class]: Cannot resolve reference to bean 'firstSqlSessionFactory' while setting bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'firstSqlSessionFactory' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Unsatisfied dependency expressed through method 'firstSqlSessionFactory' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'firstDataSource' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Invocation of init method failed; nested exception is com.atomikos.jdbc.AtomikosSQLException: Cannot initialize AtomikosDataSourceBean
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1531)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1276)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
    ... 43 more
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'firstSqlSessionFactory' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Unsatisfied dependency expressed through method 'firstSqlSessionFactory' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'firstDataSource' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Invocation of init method failed; nested exception is com.atomikos.jdbc.AtomikosSQLException: Cannot initialize AtomikosDataSourceBean
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:467)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)
    ... 56 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'firstDataSource' defined in class path resource [com/example/demo/persistence/configuration/FirstDatabaseConfiguration.class]: Invocation of init method failed; nested exception is com.atomikos.jdbc.AtomikosSQLException: Cannot initialize AtomikosDataSourceBean
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741)
    ... 66 more
Caused by: com.atomikos.jdbc.AtomikosSQLException: Cannot initialize AtomikosDataSourceBean
    at com.atomikos.jdbc.AtomikosSQLException.throwAtomikosSQLException(AtomikosSQLException.java:46)
    at com.atomikos.jdbc.AbstractDataSourceBean.init(AbstractDataSourceBean.java:306)
    at org.springframework.boot.jta.atomikos.AtomikosDataSourceBean.afterPropertiesSet(AtomikosDataSourceBean.java:49)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
    ... 77 more
Caused by: javax.naming.NamingException: Another resource already exists with name firstDataSource - pick a different name
    at com.atomikos.util.IntraVmObjectFactory.createReference(IntraVmObjectFactory.java:94)
    at com.atomikos.jdbc.AbstractDataSourceBean.getReference(AbstractDataSourceBean.java:388)
    at com.atomikos.jdbc.AbstractDataSourceBean.init(AbstractDataSourceBean.java:295)
    ... 80 more

    @SpringBootApplication
@EnableAutoConfiguration(
        exclude = {DataSourceAutoConfiguration.class, 
                DataSourceTransactionManagerAutoConfiguration.class, 
                MybatisAutoConfiguration.class})
public class AtomikosConfigApplication {

    public static void main(String[] args) {
        SpringApplication.run(AtomikosConfigApplication.class, args);
    }
}

    .

    @Configuration
@Lazy
public class FirstDatabaseConfiguration {

    @Bean
    public MapperScannerConfigurer firstMapperScannerConfigurer() {
        MapperScannerConfigurer configurer = new MapperScannerConfigurer();
        configurer.setBasePackage("com.example.demo.persistence.mapper.first");
        configurer.setSqlSessionFactoryBeanName("firstSqlSessionFactory");
        return configurer;    
    }

    /**
     * This bean uses Atomikos
     * to get transaction atomicity for 
     * few data sources (distributed transaction)
     */
    @Bean
    @ConfigurationProperties(prefix = "spring.jta.atomikos.datasource.first")
    public DataSource firstDataSource() {
        AtomikosDataSourceBean atomikosDataSourceBean = new AtomikosDataSourceBean();
        atomikosDataSourceBean.setPoolSize(10);     
        atomikosDataSourceBean.setMaxLifetime(3600); 
        return atomikosDataSourceBean;
    }

    @Bean
    public SqlSessionFactory firstSqlSessionFactory(
            @Qualifier("firstDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        return sessionFactory.getObject();
    }

}

    .

    @Mapper
public interface FirstMapper {

    @Select("SELECT * from first WHERE id = #{id}")
    @Results(value = {
            @Result(property = "id", column = "id"),
            @Result(property = "name", column = "name")
    })
    FirstModel selectById(@Param("id") long id);

}

    .

    public class FirstModel {
    private long id;
    private String name;
    public long getId() {
        return id;
    }
    public void setId(long id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}

    @RestController
public class DemoController {

    @Autowired
    FirstMapper firstMapper;

    @Autowired
    SecondMapper secondMapper;

    @GetMapping("/demo-controller")
    @Transactional
    public  String getDemoData() {

        String firstName = firstMapper.selectById(1).getName();
        String secondName = secondMapper.selectById(1).getName();

        String response = "{\"first\":"+firstName+", \"secondName\":"+secondName+"}";

        return response; 
    }

}

    @RunWith(SpringRunner.class)
@SpringBootTest
@EnableAutoConfiguration(exclude = { DataSourceAutoConfiguration.class,
        DataSourceTransactionManagerAutoConfiguration.class, MybatisAutoConfiguration.class })
@AutoConfigureMockMvc

public class DemoControllerTest {

    @MockBean
    FirstMapper firstMapper;

    @MockBean
    SecondMapper secondMapper;

    @Autowired
    MockMvc mvc;

    @Test
    public void getDemoDataTest() throws Exception {

        FirstModel firstModel = new FirstModel();
        firstModel.setId(1);
        firstModel.setName("first name");
        given(firstMapper.selectById(1l)).willReturn(firstModel);

        SecondModel secondModel = new SecondModel();
        secondModel.setId(1);
        secondModel.setName("second name");
        given(secondMapper.selectById(1l)).willReturn(secondModel);

        mvc.perform(get("/demo-controller").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isOk())
                .andExpect(jsonPath("$.first", is("first name")));

    }

}

    @RunWith(SpringRunner.class)
@SpringBootTest
@EnableAutoConfiguration(
        exclude = {DataSourceAutoConfiguration.class, 
                DataSourceTransactionManagerAutoConfiguration.class, 
                MybatisAutoConfiguration.class
    })

public class FirstMapperTest {
    @Autowired
    FirstMapper firstMapper;

    @Test
    public void selectByIdTest() {
        FirstModel first = firstMapper.selectById(1);
        assertEquals("first name", first.getName());
    }
}

    • 共有1个答案

    易弘亮
    2023-03-14

    所以我碰到了这个，在网上也找不到解决的办法。这是我最后要做的：

    我从spring-boot-autoconfigure中复制了很多AtomikosJtaConfiguration,因为自动配置的东西没有被引入到我的测试中。在运行集成测试时，我发现Spring上下文被刷新了很多次，在一些（但不是全部）刷新中，@bean方法被调用来重新创建bean。datasource方法失败了，因为之前的datasource由于某种原因没有被清理，所以我决定使用一个静态变量来保存datasource并每次返回相同的数据源。其余的都起作用了。您应该做的另一件事是将Atomikos设置为在测试期间不编写事务日志，这样测试就可以并行运行，而不会相互踩在一起。

     @Bean
 public DataSource dataSource() throws Exception {
   if (ATOMIKOS_DATA_SOURCE_BEAN == null) {
     if (xaDataSource == null) {
       xaDataSource = createXaDataSource();
     }
     ATOMIKOS_DATA_SOURCE_BEAN = new AtomikosXADataSourceWrapper().wrapDataSource(xaDataSource);
   }
   return ATOMIKOS_DATA_SOURCE_BEAN;
 }
     类似资料：
    • 如何配置詹金斯多配置构建和测试

      问题内容： 我需要在多种配置上进行构建和测试：linux，osx和solaris。我有标记为“ linux”，“ osx”和“ solaris”的从属节点。在每个配置上，我要（a）建立（b）运行冒烟测试（c）如果冒烟测试通过，然后运行完整测试，也许还要执行更多测试。 我认为多配置作业可能是答案，因此我设置了多配置构建作业，它开始在每个OS上进行并发构建。构建作业将触发下游的烟雾测试构建，进而触发完

    • 如何异步构建测试套件？

      问题内容： 我正在尝试使用必须异步加载的配置为我的控制器创建摩卡测试。下面是我的代码。但是，运行mocha测试时，它不会运行任何测试，显示为。该s的甚至从来没有叫。我尝试在describe内执行操作，但是即使运行测试，也从未调用过。有没有一种方法可以在运行任何测试之前一次加载配置？ 问题答案： 您应该使用选项运行Mocha ，然后在完成测试套件的构建后再使用。这是从您在问题中显示的代码派生的示例：

    • 如何构建Lotusdomino的测试环境？

      我想在与PRODUCTION域相同的范围内构建一个Lotus Notes TEST环境，并从PRODUCTION环境中获得names.nsf的单向副本。您有逐步参考的说明或指南吗？非常感谢。

    • m2e如何检测用于构建的配置文件？

      我观察到m2e在构建期间拾取我想要的配置文件以替换属性。它从哪里获得配置文件？我的父pom有许多配置文件。我的配置文件不存在于settings.xml的activeProfiles部分 我所做的就是右键单击项目并RUn作为maven build。

    • 如何在构建过程中跳过cumber测试

      我有一个构建项目，在其中我实现了Cucumber BDD，并编写了功能文件和测试类。现在，我想要的是在构建过程中

    • 构建JMeter测试计划

      主要内容：第1步:启动JMeter窗口,第2步:添加/删除测试计划元素,第3步:加载并保存测试计划元素。,第4步:配置树元素。,第5步:保存JMeter测试计划。,第6步:运行JMeter测试计划。,第7步：停止JMeter测试计划。,第8步：检查JMeter测试计划执行日志。可以将测试计划可视化为用于运行测试的JMeter脚本。测试计划由测试元素组成，例如线程组，逻辑控制器，样本生成控制器，监听器，定时器，断言和配置元素。 每个测试计划中至少应有一个线程组。 我们可以根据要求添加或删除元素。

    相关问答

    JMeter如何构建可靠的负载/压力测试调试看不到任何测试的sbt构建无法使用 Maven 构建运行配置运行cucumber测试如何配置Jenkins以使用Maven构建？如何配置Gradle来构建JavaEE项目

    相关文章

    当Maven单元测试失败时，如何使Jenkins构建失败？android-gradle 如何在build.gradle中配置构建类型如何在多模块Maven构建中列出最慢的JUnit测试如何在Intellij 13中创建测试目录？如何对构造函数进行单元测试

    相关阅读

    A/B测试创建变体校招生如何准备软件测试、测试开发岗位的面试？Selenium IDE手动创建测试用例设计岗校招如何准备测试题Tableau构建层次结构

    相关工具

    itest(爱测试)活性测试CoreMotion各项参数测试正则表达式测试器测试用例注解testcase-annotation

    相关文档

    测试手册Android 测试教程Linux 系统构建指南用 Jersey 构建 RESTful 服务OWASP 测试指南 v4.0
    快捷导航： 新手教程 算法原理 架构设计 Java进阶 数据库进阶 大厂专栏 面试经验 编程笔记 编程问答 所有专题 文档资料 工具软件 电子书籍 小牛导航
    在线工具： 房贷计算器 个税计算器 Linux命令查询 Json格式化 正则表达式 颜色转换 AES加解密 SHA1加密 MD5加密 毒鸡汤 字数统计 随机密码生成 进制转换 Base64编解码 励志句子
    Copyright © 2019-2024 小牛知识库@xnip.cn. All Rights Reserved.