Spring Boot style edition in Geoserver by Rest Api

Question

Could You please help me to edit styles in geoserver by POST method? I am in trouble with this and I am stuck in one place. When I run this code and go to http://localhost:8010/styles/point on the page and I have Whitelabel error and in postman I have an error 400 Bad Request

public class StyleRequest {
    private String fill = "#042041";
    private String stroke = "#040001";

    public String getFill() {
        return fill;
    }

    public void setFill(String fill) {
        this.fill = fill;
    }

    public String getStroke() {
        return stroke;
    }

    public void setStroke(String stroke) {
        this.stroke = stroke;
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/styles")
public class StyleController {

    private GeoServerStyleService styleService;

    @Autowired
    public StyleController(GeoServerStyleService styleService) {
        this.styleService = styleService;
    }

    @PostMapping("/{name}")
    public ResponseEntity<Void> editStyle(@PathVariable String name, @RequestBody StyleRequest styleRequest) {
        styleService.editStyle(name, styleRequest.getFill(), styleRequest.getStroke());
        return ResponseEntity.ok().build();
    }
}

import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Service;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.WebClient;

@Service
public class GeoServerStyleService {

    private WebClient webClient;

    public GeoServerStyleService() {
        this.webClient = WebClient.builder()
                .baseUrl("http://localhost:8080/geoserver/rest/")
                .defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_XML_VALUE)
                .build();
    }

    public void editStyle(String styleName, String fill, String stroke) {
        String styleXml = "<NamedLayer>\n" +
                "    <Name>" + styleName + "</Name>\n" +
                "    <UserStyle>\n" +
                "      <Title>A dark yellow polygon style</Title>\n" +
                "      <FeatureTypeStyle>\n" +
                "        <Rule>\n" +
                "          <Title>dark yellow polygon</Title>\n" +
                "          <PolygonSymbolizer>\n" +
                "            <Fill>\n" +
                "              <CssParameter name=\"fill\">" + fill + "</CssParameter>\n" +
                "            </Fill>\n" +
                "            <Stroke>\n" +
                "              <CssParameter name=\"stroke\">" + stroke + "</CssParameter>\n" +
                "              <CssParameter name=\"stroke-width\">0.5</CssParameter>\n" +
                "            </Stroke>\n" +
                "          </PolygonSymbolizer>\n" +
                "        </Rule>\n" +
                "      </FeatureTypeStyle>\n" +
                "    </UserStyle>\n" +
                "  </NamedLayer>";

        webClient.post()
                .uri("styles/" + styleName + ".xml")
                .body(BodyInserters.fromValue(styleXml))
                .retrieve()
                .toBodilessEntity()
                .block();
    }
}

I tried run code on http://localhost:8010/styles/point on the page and I have Whitelabel error and in postman I have an error 400 Bad Request. I don`t know what I can try

Answer 1

There are two steps to creating a new style via the REST API,

You can create a new style on the server in two ways. In the first way, the creation is done in two steps: the style entry is created in the catalog, and then the style content is uploaded

So you need to do a POST to http://localhost:8080/geoserver/rest/styles with a body of:

<style><name>roads_style</name><filename>roads.sld</filename></style>

to create the style entry, and then a PUT to http://localhost:8080/geoserver/rest/styles/roads_style - where the last element matches the name in the body above, with a content-type of application/vnd.ogc.sld+xml and a body containing the actual SLD (XML). If you want to change the style then you just repeat this step with the new SLD file.

See the manual for examples