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started to implement HttpServlet

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Signed-off-by: Stephan Richter <s.richter@srsoftware.de>
This commit is contained in:
Stephan Richter
2024-05-21 01:48:02 +02:00
parent efee5f0435
commit 65c2a2c859
7 changed files with 90 additions and 4 deletions
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4
config/formatting.xml
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@@ -311,13 +311,13 @@
<setting id="org.eclipse.jdt.core.formatter.join_wrapped_lines" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.keep_else_statement_on_same_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.keep_empty_array_initializer_on_one_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.keep_imple_if_on_one_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.keep_imple_if_on_one_line" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.lineSplit" value="999"/>
<setting id="org.eclipse.jdt.core.formatter.never_indent_block_comments_on_first_column" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve" value="3"/>
<setting id="org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.tabulation.char" value="tab"/>
<setting id="org.eclipse.jdt.core.formatter.tabulation.size" value="1"/>

4
de.srsoftware.oidc.api/User.java Normal file
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@@ -0,0 +1,4 @@
package de.srsoftware.oidc.api;
public class User {
}

5
de.srsoftware.oidc.api/src/main/java/de/srsoftware/oidc/api/User.java Normal file
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@@ -0,0 +1,5 @@
/* © SRSoftware 2024 */
package de.srsoftware.oidc.api;
public class User {
}

4
de.srsoftware.oidc.light/build.gradle
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@@ -16,6 +16,9 @@ dependencies {
implementation 'org.slf4j:slf4j-api:2.0.13'
testImplementation platform('org.junit:junit-bom:5.10.0')
testImplementation 'org.junit.jupiter:junit-jupiter'
implementation 'ch.qos.logback:logback-classic:1.5.6'
implementation project(':de.srsoftware.oidc.api')
implementation('org.antlr:ST4:4.3.3')
}
test {
@@ -24,6 +27,7 @@ test {
war {
archiveFileName = 'oidc.war'
webAppDirName = 'src/main/resources'
}

34
de.srsoftware.oidc.light/src/main/java/de/srsoftware/LightOICD.java
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@@ -1,9 +1,11 @@
/* © SRSoftware 2024 */
package de.srsoftware;
import de.srsoftware.oidc.api.User;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
@@ -11,24 +13,52 @@ import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.stringtemplate.v4.ST;
@WebServlet(urlPatterns = "/")
public class LightOICD extends HttpServlet {
private static final Logger LOG = LoggerFactory.getLogger(LightOICD.class);
private static final Templates templates;
static {
try {
templates = Templates.singleton();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
var path = Arrays.stream(req.getRequestURI().split("/")).skip(1).toList();
User user = null;
if (path.isEmpty()) {
landingPage(req, resp, user);
return;
}
switch (path.remove(0)) {
default:
helloWorld(req, resp, path);
}
}
private void helloWorld(HttpServletRequest req, HttpServletResponse resp, List<String> path) throws IOException {
LOG.debug("helloWorld(…), path = {}", path);
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.println("<html><head><title>Hello World Servlet</title></head>");
out.println("<body>");
out.println("<h1>Hello Guys!</h1>");
out.println("<ul>");
path.forEach(part -> out.println("<li>"+part+"</li>"));
path.forEach(part -> out.println("<li>" + part + "</li>"));
out.println("</ul>");
out.println("</body></html>");
out.close();
}
private void landingPage(HttpServletRequest req, HttpServletResponse resp, User user) throws IOException {
LOG.debug("landingPage(…)");
ST st = templates.getInstanceOf("index");
resp.setContentType("text/html");
resp.getWriter().println(st.render());
}
}

38
de.srsoftware.oidc.light/src/main/java/de/srsoftware/Templates.java Normal file
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@@ -0,0 +1,38 @@
/* © SRSoftware 2024 */
package de.srsoftware;
import java.io.File;
import java.io.IOException;
import java.util.Optional;
import org.stringtemplate.v4.*;
public class Templates extends STRawGroupDir {
private static Templates singleton = null;
Templates() {
super(templateDir(), '«', '»');
}
private static String templateDir() {
return templateDir(new File(System.getProperty("user.dir"))).get().getAbsolutePath();
}
private static Optional<File> templateDir(File dir) {
if (dir.isDirectory()) {
var children = dir.listFiles();
for (File child : children) {
if (child.isDirectory()) {
if (child.getName().equals("templates")) return Optional.of(child);
var inner = templateDir(child);
if (inner.isPresent()) return inner;
}
}
}
return Optional.empty();
}
public static Templates singleton() throws IOException {
if (singleton == null) singleton = new Templates();
return singleton;
}
}

5
de.srsoftware.oidc.light/src/main/resources/templates/index.st Normal file
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@@ -0,0 +1,5 @@
<html>
<body>
Dies ist die Index-Seite
</body>
</html>