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让自己的jar包支持spring-boot的配置文件自动提示

在使用IDEA编写spring-boot的配置文件的时候，如果是框架再带的配置项，在深入.的时候会有自动提示。虽然，没有自动提示，在使用的时候，也不会有问题，但是，如果有提示的话，会更加稳妥些。

那么怎么让自己jar包中的配置项也支持自动提示呢？

1.需要将配置项写成一个对象。类似这样的

package com.moensun.cloud.common.utils2.druid;

import org.springframework.boot.context.properties.ConfigurationProperties;

import java.util.List;

/**
 * Created by Bane.Shi.
 * Copyright MoenSun
 * User: Bane.Shi
 * Date: 2017/7/13
 * Time: 16:00
 */
@ConfigurationProperties(
		prefix = "spring.datasource.druid",
		ignoreInvalidFields = true,
		ignoreNestedProperties = true
)
public class DruidProperties {

	private int initialSize;
	private int maxActive;
	private int minIdle;
	private long maxWait;
	private long timeBetweenEvictionRunsMillis;
	private long minEvictableIdleTimeMillis;
	private String validationQuery;


	private Boolean testWhileIdle;
	private Boolean testOnBorrow;
	private Boolean testOnReturn;

	private Boolean poolPreparedStatements;
	private int maxPoolPreparedStatementPerConnectionSize;

	private String filters;
	private List proxyFilters;


	public int getInitialSize() {
		return initialSize;
	}

	public void setInitialSize(int initialSize) {
		this.initialSize = initialSize;
	}

	public int getMaxActive() {
		return maxActive;
	}

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

	public int getMinIdle() {
		return minIdle;
	}

	public void setMinIdle(int minIdle) {
		this.minIdle = minIdle;
	}

	public long getMaxWait() {
		return maxWait;
	}

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

	public long getTimeBetweenEvictionRunsMillis() {
		return timeBetweenEvictionRunsMillis;
	}

	public void setTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis) {
		this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
	}

	public long getMinEvictableIdleTimeMillis() {
		return minEvictableIdleTimeMillis;
	}

	public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
		this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
	}

	public String getValidationQuery() {
		return validationQuery;
	}

	public void setValidationQuery(String validationQuery) {
		this.validationQuery = validationQuery;
	}

	public Boolean getTestWhileIdle() {
		return testWhileIdle;
	}

	public void setTestWhileIdle(Boolean testWhileIdle) {
		this.testWhileIdle = testWhileIdle;
	}

	public Boolean getTestOnBorrow() {
		return testOnBorrow;
	}

	public void setTestOnBorrow(Boolean testOnBorrow) {
		this.testOnBorrow = testOnBorrow;
	}

	public Boolean getTestOnReturn() {
		return testOnReturn;
	}

	public void setTestOnReturn(Boolean testOnReturn) {
		this.testOnReturn = testOnReturn;
	}

	public Boolean getPoolPreparedStatements() {
		return poolPreparedStatements;
	}

	public void setPoolPreparedStatements(Boolean poolPreparedStatements) {
		this.poolPreparedStatements = poolPreparedStatements;
	}

	public int getMaxPoolPreparedStatementPerConnectionSize() {
		return maxPoolPreparedStatementPerConnectionSize;
	}

	public void setMaxPoolPreparedStatementPerConnectionSize(int maxPoolPreparedStatementPerConnectionSize) {
		this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
	}

	public String getFilters() {
		return filters;
	}

	public void setFilters(String filters) {
		this.filters = filters;
	}

	public List getProxyFilters() {
		return proxyFilters;
	}

	public void setProxyFilters(List proxyFilters) {
		this.proxyFilters = proxyFilters;
	}
}

2.还需要在resource下创建文件

resource/META-INFO/spring.factories

com.moensun.cloud.common.utils2.druid.DruidProperties=

这样，需要的配置基本都有了。但是，还不够，还需要生成 spring-configuration-metadata.json

3.在pom中添加生成 json的配置json的jar包

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-configuration-processor</artifactId>
		</dependency>

这样，在执行install 就可以了。

让自己的jar包支持spring-boot的配置文件自动提示

毫无违和感。

原文 http://blog.fengxiaotx.com/archives/833

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