基于SPRINGBOOT配置文件占位符过程解析

server.port=8088
debug=false
product.id=ID:${random.uuid}
product.name=da mao mao
product.weight=${random.int}
product.fristLinePrice=${random.int(500,600)}
product.endLinePrice=${random.int[300,400]}
product.remark=${product.name}

@RestController
public class SpringBootController {

  @Value("${product.id}")
  private String id;

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

  @Value("${product.weight}")
  private Integer weight;

  @Value("${product.fristLinePrice}")
  private Integer fristLinePrice;

  @Value("${product.endLinePrice}")
  private Integer endLinePrice;

  @Value("${product.remark}")
  private String remark;

  @RequestMapping("/proper")
  public String getProper() {
    System.out.println("SpringBootController{" +
        "id='" + id + '\'' +
        ", name='" + name + '\'' +
        ", weight=" + weight +
        ", fristLinePrice=" + fristLinePrice +
        ", endLinePrice=" + endLinePrice +
        ", remark='" + remark + '\'' +
        '}');

    return "hello!!!";
  }
}

SpringBootController{
　　id='ID:188b528a-508f-44aa-9b5e-43c1af7b14e3', 
　　name='da mao mao', 
　　weight=237719179, 
　　fristLinePrice=572, 
　　endLinePrice=380, 
　　remark='da mao mao'
}

server.port=8088
debug=false

product.id=ID:${random.uuid}
product.weight=${random.int}
product.fristLinePrice=${random.int(500,600)}
product.endLinePrice=${random.int[300,400]}
product.remark=${product.name:xiao mao mao}

SpringBootController{
　　id='ID:fcf731f3-c028-452a-a831-a25c1bf41d33', 
　　name='null', 
　　weight=-1450910103, 
　　fristLinePrice=584, 
　　endLinePrice=357, 
　　remark='xiao mao mao'
}