package com.crudoperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class EmployeeController {
@Autowired
private EmployeeService employeeService;
@RequestMapping("/")
public String helloGfg() {
return "hii";
}
@PostMapping("/saveEmployee")
public String saveEmployee(@ModelAttribute("employee") Employee employee) {
employeeService.saveEmployee(employee);
return "redirect:/showEmployee";
}
}
除錯器進入 helloGfg 方法，但它仍然顯示 404 錯誤..我認為會有一些其他依賴或基于注釋的問題......我怎么能找到問題？下面是我的 pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.crudoperation</groupId>
<artifactId>crudoperation</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>crudoperation Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<spring.version>5.1.0.RELEASE</spring.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring5</artifactId>
<version>3.0.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper</artifactId>
<version>8.5.51</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.17.Final</version>
</dependency>
</dependencies>
<build>
<finalName>crudoperation</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
當我在服務器上單獨運行時如何找到錯誤來自哪里..在webapp目錄中的maven專案中，然后它甚至沒有找到單獨的檔案..如何解決它？
這是我的專案結構..我需要洗掉哪些東西。我無法理解。
這是 viewResolver 的代碼
package com.crudoperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Description;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
import org.thymeleaf.templateresolver.ServletContextTemplateResolver;
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.crudoperation")
public class EmployeeAppConfig implements WebMvcConfigurer {
@Bean
public InternalResourceViewResolver resolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setViewClass(JstlView.class);
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
@Bean
public SpringResourceTemplateResolver templateResolver() {
// SpringResourceTemplateResolver automatically integrates with Spring's own
// resource resolution infrastructure, which is highly recommended.
SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
templateResolver.setApplicationContext(this.applicationContext);
templateResolver.setPrefix("/WEB-INF/templates/");
templateResolver.setSuffix(".html");
// HTML is the default value, added here for the sake of clarity.
templateResolver.setTemplateMode(TemplateMode.HTML);
// Template cache is true by default. Set to false if you want
// templates to be automatically updated when modified.
templateResolver.setCacheable(true);
return templateResolver;
}
public void addResourceHandlers(ResourceHandlerRegistry resourceHandlerRegistry) {
resourceHandlerRegistry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
}
uj5u.com熱心網友回復：
嘗試在webapp檔案夾中定義一個hii.html檔案。helloGfg正在回傳hii，但缺少具有此類名稱的資源。
uj5u.com熱心網友回復：
現在您已經準備ViewResolver好了，您可以向它們添加/設定訂單。嘗試，
templateResolver.setOrder(0); //or lower value
uj5u.com熱心網友回復：
首先我必須添加
package com.crudoperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Description;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.thymeleaf.spring3.SpringTemplateEngine;
import org.thymeleaf.spring3.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.spring3.view.ThymeleafViewResolver;
import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.crudoperation")
@Qualifier(value = "EmployeeAppConfig")
public class EmployeeAppConfig implements WebMvcConfigurer {
@Autowired
ApplicationContext applicationContext;
@Override
public void addResourceHandlers(ResourceHandlerRegistry resourceHandlerRegistry) {
resourceHandlerRegistry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
@Bean
public ClassLoaderTemplateResolver yourTemplateResolver() {
ClassLoaderTemplateResolver configurer = new ClassLoaderTemplateResolver();
configurer.setPrefix("/WEB-INF/views/");
configurer.setSuffix(".html");
configurer.setCharacterEncoding("UTF-8");
configurer.setOrder(0); // this is important. This way spring //boot will listen to both places 0 and 1
configurer.setCacheable(false);
return configurer;
}
@Bean
public SpringResourceTemplateResolver templateResolver() {
SpringResourceTemplateResolver srtr = new SpringResourceTemplateResolver();
srtr.setApplicationContext(applicationContext);
srtr.setPrefix("/WEB-INF/views/");
srtr.setSuffix(".html");
return srtr;
}
@Bean
@Description("Thymeleaf template engine with Spring integration")
public SpringTemplateEngine templateEngine() {
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(templateResolver());
return templateEngine;
}
@Bean
@Description("Thymeleaf view resolver")
public ViewResolver viewResolver() {
ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
viewResolver.setTemplateEngine(templateEngine());
viewResolver.setCharacterEncoding("UTF-8");
return viewResolver;
}
}
這樣就可以找到路徑
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