解決方法，加入下面代碼到 dispatcher-servlet.xml 檔案中

			
<mvc:annotation-driven />			
			
			

dispatcher-servlet.xml

			
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd">

	<context:component-scan base-package="cn.netkiller.controller" />
	<mvc:annotation-driven />
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.UrlBasedViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>

</beans>
			
			

pom.xml 檔案中加入依賴包

			
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
			
			

			
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/jsp/" />
		<!-- <property name="suffix" value=".jsp" /> -->
		<property name="viewNames" value="*.jsp" />
	</bean>

	<bean id="templateResolver"
		class="org.thymeleaf.templateresolver.ServletContextTemplateResolver">
		<property name="prefix" value="/WEB-INF/templates/" />
		<!-- <property name="suffix" value=".html" /> -->
		<property name="templateMode" value="HTML5" />
	</bean>

	<bean id="templateEngine" class="org.thymeleaf.spring4.SpringTemplateEngine">
		<property name="templateResolver" ref="templateResolver" />
	</bean>

	<bean class="org.thymeleaf.spring4.view.ThymeleafViewResolver">
		<property name="templateEngine" ref="templateEngine" />
		<property name="viewNames" value="*.html" />
	</bean>	
			
			

			
@RequestMapping("/thymeleaf")
public String thymeleafView(){
    return "thymeleaf.html";
}

@RequestMapping("/jsp")
public String jspView(){
    return "jstl.jsp";
}
			
			

			
			<property name="viewNames" value="*thymeleaf/*" />
			
@RequestMapping(value="/test")
public ModelAndView dboxPrint(Model model){
    ModelAndView modelAndView = new ModelAndView("thymeleaf/test");
    return modelAndView;
}
			
			

方法一，排除靜態內容如 images, css, js 等等

			
	<servlet>
        <servlet-name>springframework</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
	<servlet-mapping>
	    <servlet-name>default</servlet-name>
	    <url-pattern>/images/*</url-pattern>
	    <url-pattern>*.css</url-pattern>
	    <url-pattern>/js/*.js</url-pattern>
	</servlet-mapping>    
    <servlet-mapping>
        <servlet-name>springframework</servlet-name>
        <url-pattern>/welcome.jsp</url-pattern>
        <url-pattern>/welcome.html</url-pattern>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>			
			
			

方法二

			
	<mvc:resources location="/images/" mapping="/images/**" />
	<mvc:resources location="/css/" mapping="/css/**" />
	<mvc:resources location="/js/" mapping="/js/**" />			
			
			

配置 url-pattern 增加需要傳遞給Spring的副檔名

			
	<servlet>
        <servlet-name>springframework</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
   
    <servlet-mapping>
        <servlet-name>springframework</servlet-name>
        <url-pattern>/welcome.jsp</url-pattern>
        <url-pattern>/welcome.html</url-pattern>
        <url-pattern>*.json</url-pattern>
        <url-pattern>*.xml</url-pattern>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>		
			
			

背景描述：Springboot 入口檔案 Application.java 的包是 package api; 為了讓 domain,pojo 共用，於是將 domain 放到Maven module下命令為 common。啟動後出現這個故障。

解決方案增加 @EntityScan("common.domain") 即可。

			
package api;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
@EnableEurekaClient
@EntityScan("common.domain")
public class Application {

	public static void main(String[] args) {
		System.out.println( "Service Api Starting..." );
		SpringApplication.run(Application.class, args);
	}
}
			
			
			

Oauth @RestController 一切正常， @Controller 提示如下

		
{"error":"unauthorized","error_description":"Full authentication is required to access this resource"}		
		
			

程序如下

		
package api.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/")
public class IndexController {

	public IndexController() {
		// TODO Auto-generated constructor stub
	}

	@GetMapping("/")
	public String index() {
		return "Helloworld!!!";

	}

	@GetMapping("/about")
	public String test() {
		return "Helloworld!!!";

	}
}				
		
			

分析 @Controller 不允許直接返回字元串，必須使用 @ResponseBody 或者 ModelAndView，下改後問題解決。

		
package api.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/web")
public class IndexController {

	public IndexController() {
		// TODO Auto-generated constructor stub
	}

	@GetMapping("/")
	@ResponseBody
	public String index() {
		return "Helloworld!!!";

	}

	@GetMapping("/about")
	@ResponseBody
	public String test() {
		return "Helloworld!!!";

	}
}

		
			

同時 @EnableWebSecurity 需要忽略 @Controller 的映射 URL

			
@Configuration
@EnableWebSecurity
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {

	@Override
	public void configure(WebSecurity web) throws Exception {
		web.ignoring().antMatchers("/**/json").antMatchers("/about", "/", "/css/**");
	}
}