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  • spring-boot

     从spring网站创建

    首先到http://start.spring.io/ 创建项目，自定义添加需要的依赖，下载后使用IDEA打开

    项目结构：

    Customer

    package com.mythsky.springbootdemo.domain;

public class Customer {
    private int id;
    private String name;
    private String contact;
    private String telephone;
    private String email;
    private String remark;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getContact() {
        return contact;
    }

    public void setContact(String contact) {
        this.contact = contact;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getRemark() {
        return remark;
    }

    public void setRemark(String remark) {
        this.remark = remark;
    }
}
    View Code

    CustomerDao

    package com.mythsky.springbootdemo.dao;

import com.mythsky.springbootdemo.domain.Customer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;

@Component
public class CustomerDao {
    @Autowired
    JdbcTemplate jdbcTemplate;

    public Customer getCustomer(int id){

        return jdbcTemplate.queryForObject("select * from customer where id="+id,new BeanPropertyRowMapper<>(Customer.class));
    }
}
    View Code

    CustomerController

    package com.mythsky.springbootdemo.contorller;

import com.mythsky.springbootdemo.dao.CustomerDao;
import com.mythsky.springbootdemo.domain.Customer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class CustomerController {
    @Autowired
    private CustomerDao customerDao;
    @RequestMapping("/customer")
    public String getCustomer(){
        String name="Hello";
        Customer customer=customerDao.getCustomer(1);
        name=customer.getName();
        return name;
    }
}
    View Code

    配置数据库

    输入命令：mvn spring-boot:run

    数据库：

     打开浏览器：http://localhost:8080/customer 即可看到结果。

     在IDEA中创建

    代码结构

    修改启动代码

    @SpringBootApplication
@RestController
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
    @RequestMapping("/")
    String home(){
        return "Hello";
    }
}

     打开浏览器：http://localhost:8080 即可看到结果。

    打包发布

    在IDEA作下角选择

    这样就在项目的target目录中生成了jar文件，切换到目录中运行

    java -jar .demo-0.0.1-SNAPSHOT.jar

    最后打开浏览器即可查看。

    这里可以查看spring-boot预定义的配置参数：

    https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html

     外部配置顺序：https://docs.spring.io/spring-boot/docs/current/reference/html/spring-boot-features.html#boot-features-external-config

    实现RESTful API

    @RestController
public class HelloController {
    @GetMapping("/hello")
    public String index(){
        return "Hello World!";
    }
}

    单元测试

    import static org.hamcrest.core.IsEqual.equalTo;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@RunWith(SpringRunner.class)
@SpringBootTest
@WebAppConfiguration
public class BootdemoApplicationTests {

    private MockMvc mvc;
    @Before
    public void setUp() {
        mvc=MockMvcBuilders.standaloneSetup(new HelloController()).build();
    }
    @Test
    public void hello() throws Exception {
        mvc.perform(MockMvcRequestBuilders.get("/hello").accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andExpect(content().string(equalTo("Hello World!")));
    }
}
    View Code

    先看看测试不通过的情况

    测试通过

     自定义参数

    在application.properties中设置参数

    student.name=tom
student.age=18

    通过@Value注解来加载

    @Component
public class Student {
    @Value("${student.name}")
    private String name;
    @Value("${student.age}")
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}
    View Code

    测试

        @Autowired
    private Student student;
    @Test
    public void student(){
        Assert.assertEquals("判断名字是否相同","tom",student.getName());
    }

    参数引用

    log

    Custom Log Configuration

    <?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false">
    <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径-->
    <property name="LOG_HOME" value="/test/log" />

    <property name="logback.logdir" value="/test/log"/>
    <property name="logback.appname" value="app"/>
    <!-- 控制台输出 -->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
        </encoder>
    </appender>
    <!--输出到控制台 ConsoleAppender-->
    <appender name="consoleLog" class="ch.qos.logback.core.ConsoleAppender">
        <!--展示格式 layout-->
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>
                <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            </pattern>
        </layout>
    </appender>
    <!-- 按照每天生成日志文件 -->
    <appender name="FILE"  class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--日志文件输出的文件名-->
            <FileNamePattern>${LOG_HOME}/TestWeb.log.%d{yyyy-MM-dd}.log</FileNamePattern>
            <!--日志文件保留天数-->
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
        </encoder>
        <!--日志文件最大的大小-->
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <MaxFileSize>10MB</MaxFileSize>
        </triggeringPolicy>
    </appender>

    <appender name="fileInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--如果只是想要 Info 级别的日志，只是过滤 info 还是会输出 Error 日志，因为 Error 的级别高，
        所以我们使用下面的策略，可以避免输出 Error 的日志-->
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <!--过滤 Error-->
            <level>ERROR</level>
            <!--匹配到就禁止-->
            <onMatch>DENY</onMatch>
            <!--没有匹配到就允许-->
            <onMismatch>ACCEPT</onMismatch>
        </filter>
        <!--日志名称，如果没有File 属性，那么只会使用FileNamePattern的文件路径规则
            如果同时有<File>和<FileNamePattern>，那么当天日志是<File>，明天会自动把今天
            的日志改名为今天的日期。即，<File> 的日志都是当天的。
        -->
        <File>${logback.logdir}/info.${logback.appname}.log</File>
        <!--滚动策略，按照时间滚动 TimeBasedRollingPolicy-->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--文件路径,定义了日志的切分方式——把每一天的日志归档到一个文件中,以防止日志填满整个磁盘空间-->
            <FileNamePattern>${logback.logdir}/info.${logback.appname}.%d{yyyy-MM-dd}.log</FileNamePattern>
            <!--只保留最近90天的日志-->
            <maxHistory>90</maxHistory>
            <!--用来指定日志文件的上限大小，那么到了这个值，就会删除旧的日志-->
            <!--<totalSizeCap>1GB</totalSizeCap>-->
        </rollingPolicy>
        <!--日志输出编码格式化-->
        <encoder>
            <charset>UTF-8</charset>
            <pattern>%d [%thread] %-5level %logger{36} %line - %msg%n</pattern>
        </encoder>
    </appender>


    <appender name="fileErrorLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--如果只是想要 Error 级别的日志，那么需要过滤一下，默认是 info 级别的，ThresholdFilter-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>Error</level>
        </filter>
        <!--日志名称，如果没有File 属性，那么只会使用FileNamePattern的文件路径规则
            如果同时有<File>和<FileNamePattern>，那么当天日志是<File>，明天会自动把今天
            的日志改名为今天的日期。即，<File> 的日志都是当天的。
        -->
        <File>${logback.logdir}/error.${logback.appname}.log</File>
        <!--滚动策略，按照时间滚动 TimeBasedRollingPolicy-->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--文件路径,定义了日志的切分方式——把每一天的日志归档到一个文件中,以防止日志填满整个磁盘空间-->
            <FileNamePattern>${logback.logdir}/error.${logback.appname}.%d{yyyy-MM-dd}.log</FileNamePattern>
            <!--只保留最近90天的日志-->
            <maxHistory>90</maxHistory>
            <!--用来指定日志文件的上限大小，那么到了这个值，就会删除旧的日志-->
            <!--<totalSizeCap>1GB</totalSizeCap>-->
        </rollingPolicy>
        <!--日志输出编码格式化-->
        <encoder>
            <charset>UTF-8</charset>
            <pattern>%d [%thread] %-5level %logger{36} %line - %msg%n</pattern>
        </encoder>
    </appender>

    <!--myibatis log configure-->
    <logger name="com.apache.ibatis" level="TRACE"/>
    <logger name="java.sql.Connection" level="DEBUG"/>
    <logger name="java.sql.Statement" level="DEBUG"/>
    <logger name="java.sql.PreparedStatement" level="DEBUG"/>

    <!-- 日志输出级别 -->
    <!--<root level="INFO">-->
        <!--<appender-ref ref="STDOUT" />-->
        <!--<appender-ref ref="FILE" />-->
    <!--</root>-->
</configuration>
    View Code

    The logback manual 

    可以在layout中添加颜色及其他效果

    https://logback.qos.ch/manual/layouts.html#coloring

    配置文件

    application.yml

    spring:
  profiles:
    active: test

---
spring.profiles: dev
spring:
  application:
    name: consumer-dev
  sleuth:
    sampler:
      probability: 1
  zipkin:
    base-url: http://172.20.102.150:9411
server:
  port: 9000
service:
  username: user
  password: pwd123
eureka:
  client:
    service-url:
      defaultZone: http://${service.username}:${service.password}@172.20.102.149:8090/eureka/,http://${service.username}:${service.password}@172.20.102.150:8090/eureka/,http://${service.username}:${service.password}@172.20.102.151:8090/eureka/

---
spring.profiles: test
spring:
  application:
    name: consumer-test
  sleuth:
    sampler:
      probability: 1
  zipkin:
    base-url: http://172.20.102.150:9411
server:
  port: 9000
service:
  username: user
  password: pwd123
eureka:
  client:
    service-url:
      defaultZone: http://${service.username}:${service.password}@172.20.102.149:8090/eureka/,http://${service.username}:${service.password}@172.20.102.150:8090/eureka/,http://${service.username}:${service.password}@172.20.102.151:8090/eureka/

---
spring.profiles: prod
spring:
  application:
    name: consumer-prod
  sleuth:
    sampler:
      probability: 1
  zipkin:
    base-url: http://172.20.102.150:9411
server:
  port: 9000
service:
  username: user
  password: pwd123
eureka:
  client:
    service-url:
      defaultZone: http://${service.username}:${service.password}@172.20.102.149:8090/eureka/,http://${service.username}:${service.password}@172.20.102.150:8090/eureka/,http://${service.username}:${service.password}@172.20.102.151:8090/eureka/
    View Code

    可以在一个文件中配置多个环境，也可以在多个文件中配置

    application-dev.yml  application-test.yml

    application.properties

    #服务名称
spring.application.name=ribbon-consumer
#服务端口
server.port=9000
#连接注册中心用户名
service.username=user
#连接注册中心密码
service.password=pwd123
#注册中心地址，集群地址使用逗号分隔
eureka.client.service-url.defaultZone=http://${service.username}:${service.password}@172.20.102.149:8090/eureka/,http://${service.username}:${service.password}@172.20.102.150:8090/eureka/,http://${service.username}:${service.password}@172.20.102.151:8090/eureka/
#追踪发送zipkin频率，单位为百分比，1为百分百
spring.sleuth.sampler.probability=1
#zipkin地址
spring.zipkin.base-url=http://172.20.102.150:9411
    View Code

    同样可以使用多环境 application-dev.properties
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  • 原文地址：https://www.cnblogs.com/uptothesky/p/7994009.html
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