springboot/thymeleaf:无法分析HTML模板上的链接

我继续我的springboot/thymeleaf项目并解决了前面提到的一些问题( springboot:localhost:8080 results in whitepage error instead of showing content )。

本地宿主:8080现在显示了基因和蛋白质的列表(见图)。遵循uri http://localhost:8080/protein?id=q6gzx3(例如)我现在可以显示一种蛋白质的条目。基因也是如此。

<a th:href=“gene”?id=+$gene id“>基因</a>

无法分析。
< /代码> 

为了进一步理解/如有必要:
在解决protein.html-page的链接错误之后,
我的最终目标是:

使通过index.html显示的列表元素可单击,单击后显示基因/蛋白质的详细信息。此外,在每个基因位点上都有一个按钮,它会将你重定向到相应的蛋白质,反之亦然。

背景信息:



迄今为止我的代码:
POM.XML


<?xml version=“1.0”encoding=“utf-8”?gt;
<project xmlns=“http://maven.apache.org/pom/4.0.0”项目
xmlns:xsi=“http://www.w3.org/2001/xmlschema-instance”
xsi:schemaLocation=“http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd”>
<modelversion>4.0.0</modelversion>

<groupid>com.mmueller</groupid>
<artifactid>Springboot_v2</artifactid>
<version>1.0-快照</version>

父母亲;
<groupid>org.springframework.boot</groupid>
<artifactid>Spring引导启动程序父级</artifactid>
<version>2.0.3.版本</version>
&家长/家长;

<相关性>
<相关性>
<groupid>org.springframework.boot</groupid>
<artifactid>Spring Boot Starter Web</artifactid>
</dependency>

<相关性>
<groupid>org.apache.commons</groupid>
<artifactid>通用语言3</artifactid>
<type>JAR</type>
</dependency>

<相关性>
<groupid>组织.slf4j</groupid>
<artifactid>slf4j api</artifactid>
</dependency>

<相关性>
<groupid>org.springframework.boot</groupid>
<artifactid>春季启动启动程序thymeleaf</artifactid>
</dependency>

<相关性>
<groupid>org.springframework.boot</groupid>
<artifactid>Spring Boot Starter Web</artifactid>
</dependency>

</dependencies>

<属性>
Java.Valp& Gt;1.8 & lt;/java.版本& gt;
</properties>


建立& GT;
和插件;
&插件;
<groupid>org.springframework.boot</groupid>
<artifactid>Spring引导Maven插件</artifactid>
& Lt//Plutin & Gt;
</plugins>
&建造/建造;

</project>
< /代码> 

Maul.Java


package main;

导入db.admin.databasequery;
导入db.admin.local.databasequerylocal;
导入db.io.filereader;
导入org.springframework.boot.springapplication;
导入org.springframework.boot.autoconfigure.enableautoconfiguration;
导入org.springframework.boot.autoconfigure.springbootsapplication;
//导入org.springframework.boot.builder.springapplicationbuilder;
导入org.springframework.context.annotation.componentscan;

/**
*主类
*@作者Miriam Mueller
*/
//@配置
@Springboot应用程序
@componentscan(basepackages=“gui.spring”)//sucht alle@controller in gui.spring
@启用自动配置
公务舱主{

公共静态void main(string[]args){


databasequery query=new databasequerylocal();
新文件阅读器(查询);

spring应用程序.run(main.class,args);

}
}
< /代码> 

应用程序控制器

package gui.spring.controller;

导入db.admin.databasequery;
导入db.admin.local.databasequerylocal;
导入db.sample.gene;
导入db.sample.protein;
导入org.springframework.stereotype.controller;
导入org.springframework.ui.model;
导入org.springframework.web.bind.annotation.requestmapping;
导入org.springframework.web.bind.annotation.requestmethod;
导入java.util.list;

@控制器
公共类应用程序控制器{
@requestmapping(value=“/”,method=requestmethod.get)

公共字符串DeleteSession(模型模型){
databasequery query=new databasequerylocal();
list<protein>proteins=query.getproteins();
list<gene>genes=query.getgenes();

model.addattribute(“蛋白质”,蛋白质);
model.addattribute(“基因”,基因);
返回“索引”;
}
}
< /代码> 

蛋白调控蛋白:Java


package gui.spring.controller;

导入db.admin.databasequery;
导入db.admin.local.databasequerylocal;
导入db.sample.protein;
导入org.springframework.stereotype.controller;
导入org.springframework.ui.model;
导入org.springframework.web.bind.annotation.requestmapping;
导入org.springframework.web.bind.annotation.requestmethod;
导入org.springframework.web.bind.annotation.requestparam;
导入java.util.optional;

@控制器
公共类蛋白控制器{

@请求映射(value=“/protein”,method=requestmethod.get)
公共字符串einProtenzeigen(模型,@requestparam(“id”)字符串标识符){

databasequery query=new databasequerylocal();
可选<蛋白质>蛋白质=query.getProteinByName(标识符);

如果(protein.ispresent()){
gene associatedgene=query.getgenes().stream()。
.filter(g->g.get protein()。等于(protein.get())
.findfirst().get();

model.addattribute(“标识符”,protein.get().getIdentifier());
model.addattribute(“description”,protein.get().getdesc());
model.addattribute(“sequence”,protein.get().getSequence());
model.addattribute(“geneid”,associatedgene.getIdentifier());

}否则{
model.addattribute(“identifier”,“找不到具有此id的蛋白质”+identifier);

model.addattribute(“说明”,“);
model.addattribute(“序列”,“);
}
返回“蛋白质”;
}
}
< /代码> 

< P> GeNeNo.

package gui.spring.controller;

导入db.admin.databasequery;
导入db.admin.local.databasequerylocal;
导入db.sample.gene;
导入org.springframework.stereotype.controller;
导入org.springframework.ui.model;
导入org.springframework.web.bind.annotation.requestmapping;
导入org.springframework.web.bind.annotation.requestmethod;
导入org.springframework.web.bind.annotation.requestparam;

导入java.util.optional;

@控制器
公共类genecontroller{
//alle aufrafe der seite localhost:8080/gene landen hier,weil der value die url“/蛋白质”abgreift
@请求映射(value=“/gene”,method=requestmethod.get)
公共字符串einganzeigen(模型,@requestparam(“id”)字符串标识符){

databasequery query=new databasequerylocal();
可选<gene>gene=query.getgenebyname(标识符);

如果(gene.ispresent()){
model.addattribute(“标识符”,gene.get().getIdentifier());
model.addattribute(“description”,gene.get().getdesc());
model.addattribute(“sequence”,gene.get().getSequence());
}否则{
//wenn查询kein protein zuruckliefert eine warnung an den nutzer ausgeben:
model.addattribute(“标识符”,“找不到具有此ID的基因”+标识符);
//und die anderen属性leer setzten:
model.addattribute(“说明”,“);
model.addattribute(“序列”,“);
}

//liefert die protein.html-datei
返回“基因”;
}
}
< /代码> 

索引.html


<!文档类型HTML>
<html lang=“en”xmlns:th=“http://thymeleaf.org”>
&头;
<title>索引</title>
<meta http equiv=“content type”content=“content/html;charset=utf-8”/>gt;
和/头& GT;
和身体;

&!--<A th:href=“@/蛋白质”>“蛋白质”</A>-->

<h2>基因和蛋白质</h2>

<table align=“left”border=“1”cellspacing=“5”width=“80%”>
<td style=“width:50%;”>
<th:block th:each=“基因:$基因”>
<p th:text=“$gene.getIdentifier()”></p>
</th:block>
&T/GT;
<td style=“width:50%;”>
<th:block th:each=“蛋白质:$蛋白质”>
<p th:text=“$蛋白质.getIdentifier()”></p>
</th:block>
&T/GT;
&表;
和/身体;
& lt//html & gt;
< /代码> 

蛋白质.html


<!文档类型HTML>
<html lang=“en”xmlns:th=“http://thymeleaf.org”>
&头;
<title>蛋白质</title>
<meta http equiv=“content type”content=“content/html;charset=utf-8”>
和/头& GT;
和身体;
<h2 th:text=“$标识符”></h2>

& BR/>
<P th:text=“$说明”></P>

& BR/>
<p th:text=“$序列”style=“width:400px;换行:换行符”></p>
& BR/>

<A th:href=“gene”什么?id=+$gene id“>基因</a>

和/身体;
& lt//html & gt;
< /代码> 

基因.html


<预> <代码>!文档类型HTML>
<html lang=“en”xmlns:th=“http://thymeleaf.org”>
&头;
<title>蛋白质</title>
<meta http equiv=“content type”content=“content/html;charset=utf-8”>
和/头& GT;
和身体;

<h2 th:text=“$标识符”></h2>

& BR/>
<P th:text=“$说明”></P>

& BR/>
<p th:text=“$序列”style=“width:400px;换行:换行符”></p>

和/身体;
& lt//html & gt;
< /代码> <)


本地宿主:8080现在显示了基因和蛋白质的列表(见图)。在URI后面http://localhost:8080/protein?id=Q6GZX3(例如)我现在可以显示一种蛋白质的条目。基因也是如此。


现在,我尝试链接蛋白质和基因(在蛋白质页面上有一个链接,上面写着“基因”,点击后显示基因html页面)。仅限于蛋白质页)。执行后,我的protein.html出现以下错误:


 <a th:href=”gene?id= + ${geneid}”>Gene</a>

 could not be parsed. 


为了进一步理解/如有必要:
在解决protein.html-page的链接错误之后,
我的最终目标是:


使通过index.html显示的列表元素可单击,单击后显示基因/蛋白质的详细信息。此外,在每个基因位点上都有一个按钮,它将你导向相应的蛋白质,反之亦然。


背景信息:




我的代码到目前为止:
XML


<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.MMueller</groupId>
    <artifactId>SpringBoot_v2</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <type>jar</type>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

    </dependencies>

    <properties>
        <java.version>1.8</java.version>
    </properties>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>


主类


package main;

import db.admin.DatabaseQuery;
import db.admin.local.DatabaseQueryLocal;
import db.io.FileReader;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
//import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.context.annotation.ComponentScan;

/**
 * Main class
 * @author Miriam Mueller
 */
//@Configuration
@SpringBootApplication
@ComponentScan(basePackages = "gui.spring")// sucht alle @Controller in gui.spring
@EnableAutoConfiguration
public class Main {

    public static void main(String[] args) {


        DatabaseQuery query = new DatabaseQueryLocal();
        new FileReader(query); 

        SpringApplication.run(Main.class, args);

    }
}


应用程序控制器.java


package gui.spring.controller;

import db.admin.DatabaseQuery;
import db.admin.local.DatabaseQueryLocal;
import db.sample.Gene;
import db.sample.Protein;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import java.util.List;

@Controller
public class ApplicationController {
    @RequestMapping(value = "/", method=RequestMethod.GET)

    public String deleteSession(Model model){
        DatabaseQuery query = new DatabaseQueryLocal();
        List<Protein> proteins = query.getProteins();
        List<Gene> genes= query.getGenes();

        model.addAttribute("proteins", proteins);
        model.addAttribute("genes", genes);
        return "index";
    }
}


蛋白质控制器.java


package gui.spring.controller;

import db.admin.DatabaseQuery;
import db.admin.local.DatabaseQueryLocal;
import db.sample.Protein;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.Optional;

@Controller
public class ProteinController {

    @RequestMapping(value = "/protein", method = RequestMethod.GET)
    public String einProteinAnzeigen(Model model, @RequestParam("id") String identifier) {

        DatabaseQuery query = new DatabaseQueryLocal();
        Optional<Protein> protein = query.getProteinByName(identifier);

        if(protein.isPresent()) {
Gene associatedGene = query.getGenes().stream()
        .filter(g -> g.getProtein().equals(protein.get()))
        .findFirst().get();

            model.addAttribute("identifier", protein.get().getIdentifier());
            model.addAttribute("description", protein.get().getDesc());
            model.addAttribute("sequence", protein.get().getSequence());
    model.addAttribute("geneid", associatedGene.getIdentifier());

            } else {
             model.addAttribute("identifier", "No Protein found with this id " + identifier);

             model.addAttribute("description", "");
             model.addAttribute("sequence", "");
             }
            return "protein";
        }
}


通用控制器.java


package gui.spring.controller;

import db.admin.DatabaseQuery;
import db.admin.local.DatabaseQueryLocal;
import db.sample.Gene;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.Optional;

@Controller
public class GeneController {
    //Alle Aufrufe der Seite localhost:8080/gene landen hier, weil der value die URL "/protein" abgreift
    @RequestMapping(value = "/gene", method = RequestMethod.GET)
    public String einGenAnzeigen(Model model, @RequestParam("id") String identifier) {

        DatabaseQuery query = new DatabaseQueryLocal();
        Optional<Gene> gene = query.getGeneByName(identifier);

        if(gene.isPresent()) {
            model.addAttribute("identifier", gene.get().getIdentifier());
            model.addAttribute("description", gene.get().getDesc());
            model.addAttribute("sequence", gene.get().getSequence());
        } else {
            //wenn query kein Protein zuruckliefert eine Warnung an den Nutzer ausgeben:
            model.addAttribute("identifier", "No Gene found with this id " + identifier);
            //und die anderen Attribute leer setzten:
            model.addAttribute("description", "");
            model.addAttribute("sequence", "");
        }

        //liefert die protein.html-Datei
        return "gene";
    }
}


索引文件


<!DOCTYPE html>
<html lang="en" xmlns:th="http://thymeleaf.org">
<head>
    <title>Index</title>
    <meta http-equiv="Content-Type" content="content/html; charset=UTF-8"/>
</head>
<body>

    <!--<a th:href="@{/protein}">"Proteins"</a> -->

    <h2>Genes and Proteins</h2>

    <table align="left" border="1" cellspacing="5" width="80%">
        <td style="width:50%;">
            <th:block th:each="gene:${genes}">
                <p th:text="${gene.getIdentifier()}"></p>
            </th:block>
        </td>
        <td style="width: 50%;">
            <th:block th:each="protein:${proteins}">
                <p th:text="${protein.getIdentifier()}"></p>
            </th:block>
        </td>
    </table>
</body>
</html>


蛋白质


<!DOCTYPE html>
<html lang="en" xmlns:th="http://thymeleaf.org">
<head>
    <title>Protein</title>
    <meta http-equiv="Content-Type" content="content/html; charset=UTF-8">
</head>
<body>
        <h2 th:text="${identifier}"></h2>

        <br/>
        <p th:text="${description}"></p>

        <br/>
        <p th:text="${sequence}" style="width: 400px; word-wrap: break-word"></p>
<br/>

<a th:href="gene?id= + ${geneid}">Gene</a>

</body>
</html>


HTML


!DOCTYPE html>
<html lang="en" xmlns:th="http://thymeleaf.org">
<head>
    <title>Protein</title>
    <meta http-equiv="Content-Type" content="content/html; charset=UTF-8">
</head>
<body>

    <h2 th:text="${identifier}"></h2>

    <br/>
    <p th:text="${description}"></p>

    <br/>
    <p th:text="${sequence}" style="width: 400px; word-wrap: break-word"></p>

</body>
</html>