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服务器上，任务四的职业页面，统计每个职业的学生人数的SQL出错

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2

tiles

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<select id="findProfession" resultMap="professionMap">
        select profession.*,count(student.id) count from profession
        left join student on profession.id=student.classify_id
        group by profession.classify
    </select>

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Springboot整合redis出错。NOAUTH Authenticatio

1

2

springboot

class="cursor-pointer"> 详细描述

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SSM不能顺利运行

7

2

SSM

class="cursor-pointer"> 详细描述

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Server端打包成jar包后无法运行

2

2

springRMI

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.4.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.jnshu.TestMain</mainClass>
                                </transformer>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.handlers</resource>
                                </transformer>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.schemas</resource>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

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SSM框架下页面跳转为什么失败？

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2

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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controller部分：
@Controller
@RequestMapping("/paper")
public class PaperController {
    @Autowired
    private PaperService paperService;

    @RequestMapping("/allPaper")
    public String list(Model model) {
        List<Paper> list = paperService.queryAllPaper();
        model.addAttribute("list", list);
        return "allPaper";
    }

    @RequestMapping("toAddPaper")
    public String toAddPaper() {
        return "addPaper";
    }

    @RequestMapping("/addPaper")
    public String addPaper(Paper paper) {
        paperService.addPaper(paper);
        return "redirect:/paper/allPaper";
    }

    @RequestMapping("/del/{paperId}")
    public String deletePaper(@PathVariable("paperId") Long id) {
        paperService.deletePaperById(id);
        return "redirect:/paper/allPaper";
    }

    @RequestMapping("toUpdatePaper")
    public String toUpdatePaper(Model model, Long id) {
        model.addAttribute("paper", paperService.queryById(id));
        return "updatePaper";
    }

    @RequestMapping("/updatePaper")
    public String updatePaper(Model model, Paper paper) {
        paperService.updatePaper(paper);
        paper = paperService.queryById(paper.getPaperId());
        model.addAttribute("paper", paper);
        return "redirect:/paper/allPaper";
    }
}

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关于spring配置文件applicationContext.xml表头

4

2

mybatis spring

class="cursor-pointer"> 详细描述

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SSM resultful接口 post body中from-data提交

2

2

rest SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

springmvc-servlet.xml
<context:component-scan base-package="com.controller"/>
<mvc:annotation-driven/>

<bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/><!--设置JSP文件的目录位置-->
<property name="suffix" value=".jsp"/>
</bean>

web.xml

<display-name>Archetype Created Web Application</display-name>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>


<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
<init-param>
<param-name>methodParam</param-name>
<param-value>_method</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springmvc-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>

</servlet-mapping>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

Controller
@Autowired
private UserService userService;

@RequestMapping(value = "/user", method = RequestMethod.POST)
public ModelAndView addUser( ModelAndView modelAndView,User user) {
System.out.println(user.toString());
userService.addUser(user);
modelAndView.addObject("user", user);
modelAndView.setViewName("showUser");
return modelAndView;
}

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数据库使用JDBC插入数据之后一直中文乱码

2

2

数据库

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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Nginx配置日志格式报错

1

2

Nginx

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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任务五JWT工具类的书写

3

2

会话管理

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

package com.POJO;

import com.sun.org.apache.xml.internal.security.algorithms.SignatureAlgorithm;

import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import java.security.Key;
import java.util.Date;

/**
 * @author: 曹樾
 * @program: task5
 * @description: JWT生成token
 * @create: 2018/4/27 下午8:14
 */

public class JwtHelper {
    private final static String base64Secret = "MDk4ZjZiY2Q0NjIxZDM3M2NhZGU0ZTgzMjYyN2I0ZjY=";
    private final static int expiresSecond = 172800000;
    
    public static Claims parseJWT(String jsonWebToken) {
        try {
            Claims claims = Jwts.parser()
                    .setSigningKey(DatatypeConverter.parseBase64Binary(base64Secret))
                    .parseClaimsJws(jsonWebToken).getBody();
            return claims;
        } catch (Exception ex) {
            return null;
        }
    }
    
    public static String createJWT(String username, String roles, String privileges) {
        SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
        
        long nowMillis = System.currentTimeMillis();
        Date now = new Date(nowMillis);
        
        //生成签名密钥
        byte[] apiKeySecretBytes = DatatypeConverter.parseBase64Binary(base64Secret);
        Key signingKey = new SecretKeySpec(apiKeySecretBytes, signatureAlgorithm.getJcaName());
        
        //添加构成JWT的参数
        JwtBuilder builder = Jwts.builder().setHeaderParam("typ", "JWT")
                .claim("user_name", username)
                .claim("user_role", roles)
                .claim("user_privilege", privileges)
                .signWith(signatureAlgorithm, signingKey);
        //添加Token过期时间
        if (expiresSecond >= 0) {
            long expMillis = nowMillis + expiresSecond;
            Date exp = new Date(expMillis);
            builder.setExpiration(exp).setNotBefore(now);
        }
        
        //生成JWT
        return builder.compact();
    }
}

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