六、springboot中通过properties配置文件给类属性赋值

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通过properties配置文件给类属性赋值呢？

举例：

1、首先我在src/main/resources文件夹下新建个company.properties文件，设置一些数据

ge.companyName=\u6210\u90FD\u683C\u667A\u7F51\u7EDC\u79D1\u6280\u6709\u9650\u516C\u53F8
ge.telphone=028-88594556
ge.lawPerson=\u4F55\u61A8\u950B

2、新建一个类，叫做CompanyBean

@ConfigurationProperties(prefix="ge") 注解给属性添加前缀，因为在properties文件中属性前面有前缀ge，后面的属性名要和类中的属性名一致对应
@PropertySource(value= {"classpath:company.properties"})  引入配置文件

package com.ge.springboot.bean;

import java.io.Serializable;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix="ge")
@PropertySource(value= {"classpath:company.properties"})
public class CompanyBean implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 4349552945449301902L;
	/**
	 * 公司名称
	 */
	private String companyName;
	/**
	 * 联系方式
	 */
	private String telphone;
	/**
	 * 法人代表
	 */
	private String lawPerson;
	
	
	
	public CompanyBean() {
		super();
		// TODO Auto-generated constructor stub
	}
	public String getCompanyName() {
		return companyName;
	}
	public void setCompanyName(String companyName) {
		this.companyName = companyName;
	}
	public String getTelphone() {
		return telphone;
	}
	public void setTelphone(String telphone) {
		this.telphone = telphone;
	}
	public String getLawPerson() {
		return lawPerson;
	}
	public void setLawPerson(String lawPerson) {
		this.lawPerson = lawPerson;
	}
	@Override
	public String toString() {
		return "CompanyBean [companyName=" + companyName + ", telphone=" + telphone + ", lawPerson=" + lawPerson + "]";
	}
}

3、如何使用呢？

比如我在表现层使用，只需要用这个类创建个属性，然后通过@Resource注解把它交给spring容器即可

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ge.springboot.bean.CompanyBean;
import com.ge.springboot.bean.UserBean;

@RequestMapping("/sysmag")
@Controller
public class FreeMarkerController {

	@Resource
	private CompanyBean companyBean;
	
	@RequestMapping("/freemarker")
	public String toFreemarkerPage(Model model,String userName) {
		
		model.addAttribute("userName", userName);
		model.addAttribute("companyBean", companyBean);
		
		System.out.println(companyBean);
		
		List<UserBean> users = new ArrayList<>();
		UserBean user01 = new UserBean("张大麻子");
		UserBean user02 = new UserBean("李四");
		UserBean user03 = new UserBean("王五");
		users.add(user01);
		users.add(user02);
		users.add(user03);
		
		model.addAttribute("users", users);
		
		return "freemarker";
		
	}
	
}