SpringBoot+thymeleaf时,pojo类的get，set大小写影响前端显示吗？

Question

创建User类（username,password），当get，set方法全是小写的时候（getusername,setusername,getpassword,setpassword）

Controller模拟数据插入Attribute
```java
List users = new ArrayList<User>();
        users.add(new User("asd","123"));
        users.add(new User("2asd34","234"));
        users.add(new User("sda","345"));
        users.add(new User("asdasd","456"));
        model.addAttribute("users",users);

前端显示失败，查询不到传入的数据

当get，set方法为大写时（getUsername,setUsername,getPassword,setPassword）

却能正常显示传入的数据

有没有人能指点一下

另附相关代码，其中改动只有get，set的首字母大小写

Controller
@GetMapping("/dynamic_table")
    public String dynamic(Model model){
//        表格信息遍历
        List users = new ArrayList<User>();
        users.add(new User("asd","123"));
        users.add(new User("2asd34","234"));
        users.add(new User("sda","345"));
        users.add(new User("asdasd","456"));
        model.addAttribute("users",users);
        return "table/dynamic_table";
    }

User类改动前
public class User {
    private String username;
    private String password;
    public String getUsername() {
        return username;
    }

    public String getPassword() {
        return password;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

User类改动后
public class User {
    private String username;
    private String password;
    public String getusername() {
        return username;
    }

    public String getpassword() {
        return password;
    }

    public void setusername(String username) {
        this.username = username;
    }

    public void setpassword(String password) {
        this.password = password;
    }
}

<table class="display table table-bordered" id="hidden-table-info">
        <thead>
        <tr>
            <th>Rendering engine</th>
            <th>Browser</th>
            <th class="hidden-phone">Platform(s)</th>
        </tr>
        </thead>
        <tbody>
        <tr  data-th-each="user:${users}">
            <td>Internet</td>
            <td th:text="${user.username}">username</td>
            <td th:text="${user.password}">password</td>
        </tr>
        </tbody>
        </table>

Answer 1

${user.username}

这种用法，方法名需要遵循驼峰命名法。对应的get方法必须是getUsername，否则会导致找不到这个方法的返回值。
这是一种规范定义(驼峰命名)，根据属性名找到对应的get方法从而获取属性值。