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spring boot在eclipse中怎么用

SpringBoot

HUX布斯 2019-05-13 15:08:34

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喵喵時(shí)光機(jī)

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要SpringBoot進(jìn)行功能開(kāi)發(fā)，需要使用Gradle或者M(jìn)aven作為構(gòu)建工具。在本例中，我們會(huì)使用Eclipse和Maven插件進(jìn)行開(kāi)發(fā)。要使用SpringBoot，首先創(chuàng)建一個(gè)Maven工程，并修改Maven主要的配置文件pom.xml

反對(duì) 回復(fù) 2019-05-14

慕蓋茨4494581

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在spring boot中，簡(jiǎn)單幾步，讀取配置文件（application.yml）中各種不同類(lèi)型的屬性值：
1、引入依賴(lài)：
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 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional> </dependency>

2、配置文件（application.yml）中配置各個(gè)屬性的值：
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myProps: #自定義的屬性和值 simpleProp: simplePropValue arrayProps: 1,2,3,4,5 listProp1: - name: abc value: abcValue - name: efg value: efgValue listProp2: - config2Value1 - config2Vavlue2 mapProps: key1: value1 key2: value2

3、創(chuàng)建一個(gè)bean來(lái)接收配置信息：
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@Component @ConfigurationProperties(prefix="myProps") //接收application.yml中的myProps下面的屬性 public class MyProps { private String simpleProp; private String[] arrayProps; private List<Map<String, String>> listProp1 = new ArrayList<>(); //接收prop1里面的屬性值 private List<String> listProp2 = new ArrayList<>(); //接收prop2里面的屬性值 private Map<String, String> mapProps = new HashMap<>(); //接收prop1里面的屬性值 public String getSimpleProp() { return simpleProp; } //String類(lèi)型的一定需要setter來(lái)接收屬性值；maps, collections, 和 arrays 不需要 public void setSimpleProp(String simpleProp) { this.simpleProp = simpleProp; } public List<Map<String, String>> getListProp1() { return listProp1; } public List<String> getListProp2() { return listProp2; } public String[] getArrayProps() { return arrayProps; } public void setArrayProps(String[] arrayProps) { this.arrayProps = arrayProps; } public Map<String, String> getMapProps() { return mapProps; } public void setMapProps(Map<String, String> mapProps) { this.mapProps = mapProps; } }

啟動(dòng)后，這個(gè)bean里面的屬性就會(huì)自動(dòng)接收配置的值了。
4、單元測(cè)試用例：
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@Autowired private MyProps myProps; @Test public void propsTest() throws JsonProcessingException { System.out.println("simpleProp: " + myProps.getSimpleProp()); System.out.println("arrayProps: " + objectMapper.writeValueAsString(myProps.getArrayProps())); System.out.println("listProp1: " + objectMapper.writeValueAsString(myProps.getListProp1())); System.out.println("listProp2: " + objectMapper.writeValueAsString(myProps.getListProp2())); System.out.println("mapProps: " + objectMapper.writeValueAsString(myProps.getMapProps())); }

測(cè)試結(jié)果：
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simpleProp: simplePropValue arrayProps: ["1","2","3","4","5"] listProp1: [{"name":"abc","value":"abcValue"},{"name":"efg","value":"efgValue"}] listProp2: ["config2Value1","config2Vavlue2"] mapProps: {"key1":"value1","key2":"value2"}