CodingJavaSpring Boot三层架构
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请求

SpringBoot 方式

简单参数请求

参数名称与形参变量名相同，即可接收参数

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@RestController
public class SimpleParamController {
    @RequestMapping("/simpleParam")
    public String simpleParam(String name, Integer age) {
        System.out.println(name + ":" + age);
        return "OK";
    }
}

实体对象参数

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@RequestMapping("/simplePojo")
public String simpleParam(User user) {
    System.out.println(user);
    return "OK";
}
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public class User {
    private String name;
    private Integer age;
    // 以及成员的 Getter 和 Setter
    // 本例中需输出还要重写 toString
}

复杂实体对象参数

参数对象有 对象嵌套

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public class User {
    private String name;
    private Integer age;
    private Address address; // 多了个对象
}

public class Address {
    private String province;
    private String city;
}

请求的参数写做：

GET: localhost:8080/...&address.province=beijing&address.city=beijing

数组集合请求

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@RequestMapping("/arrayParam")
public String arrayParam(String[] hobby) {
    System.out.println(Arrays.toString(hobby));
    return "OK";
}

请求写作：
localhost:8080/arrayParam?hobby=打球&hobby=玩游戏&hobby=唱歌

默认封装到数组中，可修改成集合：

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@RequestMapping("/listParam")
public String listParam(String[] hobby) {
    System.out.println(Arrays.toString(hobby));
    return "OK";
}