Spring-boot 使用 Thymeleaf模板each遍历list对象无效
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2015年12月07日
测试发现不能解析，后查原因是和对象类有关。
必须设置相关属性的getter方法，或将对象属性设为pubic , 如：
public String firstName, lastName;
控制器
@Controller
public class GreetingController {
@Autowired
JdbcTemplate jdbcTemplate;
@RequestMapping("/greeting")
public String greeting(
@RequestParam(value = "name", required = false, defaultValue = "World") String name,
Model model) {
model.addAttribute("name", name);
System.out
.println("Querying for customer records where first_name = 'Josh':");
List<Customer> results = jdbcTemplate
.query("select id, first_name, last_name from customers where first_name = ?",
new Object[] { "Josh" }, new RowMapper<Customer>() {
public Customer mapRow(ResultSet rs, int rowNum)
throws SQLException {
return new Customer(rs.getLong("id"), rs
.getString("first_name"), rs
.getString("last_name"));
}
});
for (Customer customer : results) {
System.out.println(customer);
}
model.addAttribute("customers", results);
return "greeting";
}
}对象
package hello;
public class Customer {
private long id;
public String firstName, lastName;
public Customer(long id, String firstName, String lastName) {
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
}
@Override
public String toString() {
return String.format(
"Customer[id=%d, firstName='%s', lastName='%s']",
id, firstName, lastName);
}
public long getId() {
return id;
}
// getters & setters omitted for brevity
}模板
<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Getting Started: Serving Web Content</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<p th:text="'Hello, ' + ${name} + '!'" />
<p th:text="'Hello, ' + ${customers} + '!'" />
<table>
<tr>
<th>NAME</th>
<th>PRICE</th>
<th>IN STOCK</th>
</tr>
<tr th:each="customer, iterStat : ${customers}">
<td th:text="${customer.id}">Onions</td>
<td th:text="${customer.firstName}">2.41</td>
<td th:text="${customer.lastName}">yes</td>
</tr>
</table>
</body>
</html>Hello, [Customer[id=3, firstName='Josh', lastName='Bloch'], Customer[id=4, firstName='Josh', lastName='Long'], Customer[id=7, firstName='Josh', lastName='Bloch'], Customer[id=8, firstName='Josh', lastName='Long'], Customer[id=11, firstName='Josh', lastName='Bloch'], Customer[id=12, firstName='Josh', lastName='Long'], Customer[id=15, firstName='Josh', lastName='Bloch'], Customer[id=16, firstName='Josh', lastName='Long'], Customer[id=19, firstName='Josh', lastName='Bloch'], Customer[id=20, firstName='Josh', lastName='Long'], Customer[id=23, firstName='Josh', lastName='Bloch'], Customer[id=24, firstName='Josh', lastName='Long'], Customer[id=27, firstName='Josh', lastName='Bloch'], Customer[id=28, firstName='Josh', lastName='Long'], Customer[id=31, firstName='Josh', lastName='Bloch'], Customer[id=32, firstName='Josh', lastName='Long'], Customer[id=35, firstName='Josh', lastName='Bloch'], Customer[id=36, firstName='Josh', lastName='Long']]!
NAME PRICE IN STOCK
3 Josh Bloch
4 Josh Long
7 Josh Bloch
8 Josh Long
11 Josh Bloch
12 Josh Long
15 Josh Bloch
16 Josh Long
19 Josh Bloch
20 Josh Long
23 Josh Bloch
24 Josh Long
27 Josh Bloch
28 Josh Long
31 Josh Bloch
32 Josh Long
35 Josh Bloch
36 Josh Long
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