yaml 文件的使用list或Map

原創

2020-02-21 18:46

# yml文件
spring:
  #list<map>
  testList:
    -
      name: 小王
      age: 12
    -
      name: 小李
      age: 13
  # map<String,String>
  testMap:
    name: 小朱
    age: 14
testname: 小明

獲取配置文件有兩種方式
- 使用 @Value

package com.example.demo;

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;


import java.util.Map;

@Data
//@Service
@Component
public class TestConfig {
//註釋的兩行會報錯，java.lang.IllegalStateException: Failed to load ApplicationContext
//    @Value("${spring.testMap}")
//    private Map<String,String> testMap;

    @Value("${testname}")
    private String name;

    @Value("${spring.testMap.name}")
    private String name2;

    private String name1;
}

使用@ConfigurationProperties

package com.example.demo;

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Map;

@Data
@Component
@ConfigurationProperties(prefix = "spring")
public class TestConfigurationProperties {
  private List<Map> testList;
  private Map<String,String> testMap;
  @Value("${testname}")
  private String name;
}

test:

 @Autowired
    private TestConfig testConfig;

    @Test
    public void test7(){
        System.out.println(testConfig.getName());//小明

        System.out.println(testConfig.getName2());//小朱

    }

 @Autowired
    private TestConfigurationProperties testConfigurationProperties;

    @Test
    public void test8(){
        System.out.println(testConfigurationProperties.getTestMap());
        System.out.println(testConfigurationProperties.getTestList());
        System.out.println(testConfigurationProperties.getName());

    }
    /**
    {name=小朱, age=14}
[{name=小王, age=12}, {name=小李, age=13}]
小明
*/