Spring Request Param中+(plus)的反序列化 [英] Desserialization of + (plus) in Spring Request Param

问题描述

我有一个简单的 HTTP GET 请求，如下所示:

I have a simple HTTP GET request like this:

http://localhost:8080/search?page=0&size=20&sort=id,asc&description=1+3

还有一个 RestController:

And a RestController:

@RequestMapping(value = "/search", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public ResponseEntity<List<TestEntity>> search(Pageable pageable, @RequestParam("description") String description) {

    Page<TestEntity> page = service.search(pageable, description);
    HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page);
    return ResponseEntity
            .ok()
            .headers(headers)
            .body(page.getContent());

}

但是 @RequestParam "description" 的值变成了 "1 3".

But the value of @RequestParam "description" is getting "1 3".

我做错了什么?

或者我应该怎么做才能在 Spring @RequestParam 中将+"这样的信号反序列化为+"?

Or what should I do so that signals like "+" are deserialized to "+" in the Spring @RequestParam?

这是我的 pom.xml

This is my pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.5.RELEASE</version>
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
    <project.http.version>1.23.0</project.http.version>
    <project.oauth.version>1.23.0</project.oauth.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>com.zaxxer</groupId>
        <artifactId>HikariCP</artifactId>
        <version>3.1.0</version>
    </dependency>
    <dependency>
        <groupId>org.liquibase</groupId>
        <artifactId>liquibase-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>

    <dependency>
        <groupId>javax.xml.bind</groupId>
        <artifactId>jaxb-api</artifactId>
        <version>2.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.sun.xml.bind</groupId>
        <artifactId>jaxb-core</artifactId>
        <version>2.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.sun.xml.bind</groupId>
        <artifactId>jaxb-impl</artifactId>
        <version>2.3.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.8.1</version>
    </dependency>

</dependencies>

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

推荐答案

一切都如预期.根据 URL 编码中的 RFC3986，+ 是解码为空格的保留字符.要将 + 用作值，您需要将其编码为 %2B，如 百分比编码保留字符.这将使您的网址:

Everything is as expected. As per RFC3986 in URL encoding + is a reserved character decoded to space. To use + as a value you need to encode it as %2B as explained in Percent-encoding reserved characters. This will make your URL:

http://localhost:8080/search?page=0&size=20&sort=id,asc&description=1%2B3

请注意，有时 Spring 在处理 + 时会不一致，例如SPR-16860 Spring 在 URL 的编码/解码中不一致 错误.

Do note that sometimes Spring is inconsistent when it comes to + handling e.g. SPR-16860 Spring is inconsistent in the encoding/decoding of URLs bug.

这篇关于Spring Request Param中+(plus)的反序列化的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！