项目需求

• 本地环境使用embedded tomcat并配置数据源（jndi）
• 生产环境使用weblogic服务器，war包部署，使用jndi数据源

实现方式

• spring boot配置jndi

#spring.datasource.jndi-name=java:comp/env/jdbc/orcl
spring.datasource.jndi-name=jdbc/orcl

• 本地使用embedded tomcat，需要修改内核，配置jndi
  • 配置application-dev.properties

spring.datasource.jndi-name=jdbc/orcl
# DEV
data-source.jndiName=jdbc/orcl
data-source.factory=org.apache.tomcat.jdbc.pool.DataSourceFactory
data-source.driverClassName=oracle.jdbc.driver.OracleDriver
data-source.url=jdbc:oracle:thin:@192.168.11.245:1521/Base
data-source.username=U_JSP
data-source.pwd=U_JSP
data-source.maxActive=100
data-source.maxIdle=30
data-source.maxWait=10000

• 配置PropConfig类，接受配置

@ConfigurationProperties(ignoreUnknownFields = false,prefix = "data-source")
public class DataSourceConfig {
    private String jndiName;
    private String factory;
    private String driverClassName;
    private String url;
    private String username;
    private String pwd;
    private String maxActive;
    private String maxIdle;
    private String maxWait;


    public String getJndiName() {
        return jndiName;
    }

    public void setJndiName(String jndiName) {
        this.jndiName = jndiName;
    }

    public String getFactory() {
        return factory;
    }
    public void setFactory(String factory) {
        this.factory = factory;
    }

    public String getDriverClassName() {
        return driverClassName;
    }

    public void setDriverClassName(String driverClassName) {
        this.driverClassName = driverClassName;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public String getMaxActive() {
        return maxActive;
    }

    public void setMaxActive(String maxActive) {
        this.maxActive = maxActive;
    }

    public String getMaxIdle() {
        return maxIdle;
    }

    public void setMaxIdle(String maxIdle) {
        this.maxIdle = maxIdle;
    }

    public String getMaxWait() {
        return maxWait;
    }

    public void setMaxWait(String maxWait) {
        this.maxWait = maxWait;
    }
}

• 配置ServletWebServerFactory

@Configuration
public class JNDIConfig {
    @Resource
    private DataSourceConfig dataSourceConfig;

    @ConditionalOnProperty(name = "spring.profiles.active", havingValue = "dev")
    @Bean
    public ServletWebServerFactory webServerFactory() {
        TomcatServletWebServerFactory tomcatServletWebServerFactory = new TomcatServletWebServerFactory(){
            @Override
            protected TomcatWebServer getTomcatWebServer(Tomcat tomcat) {
                // 启用默认禁用的JNDI命名
                tomcat.enableNaming();
                return super.getTomcatWebServer(tomcat);
            }
            @Override
            protected void postProcessContext(Context context) {
                ContextResource resource = new ContextResource();
                resource.setType(DataSource.class.getName());
                resource.setName(dataSourceConfig.getJndiName());
                resource.setProperty("factory", dataSourceConfig.getFactory());
                resource.setProperty("driverClassName", dataSourceConfig.getDriverClassName());
                resource.setProperty("url", dataSourceConfig.getUrl());
                resource.setProperty("username", dataSourceConfig.getUsername());
                resource.setProperty("password", dataSourceConfig.getPwd());
                // 连接池配置，和测试、生产配置一致。
                resource.setProperty("maxActive", dataSourceConfig.getMaxActive()); // 最大连接数
                resource.setProperty("maxIdle", dataSourceConfig.getMaxIdle()); // 空闲连接数
                resource.setProperty("maxWait", dataSourceConfig.getMaxWait()); // 最大等待时间
                context.getNamingResources().addResource(resource);

                super.postProcessContext(context);
            }
        };
        return tomcatServletWebServerFactory;
    }
}

• 生成环境application-prod.properties配置

spring.datasource.jndi-name=jdbc/orcl

• 问题：
  • 直接使用mvn package报错

Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial

• 原因分析：
  jndi必须挂载在服务器上才能使用，所以mvn package test阶段报错

• 解决方法
  先不配置jndi，打包完成后再使用jndi配置

• 参考