如何读取jersy

Question

此代码我测试了值

@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
public String getE(@FormDataParam("file") InputStream inputStream,@FormDataParam("file") FormDataContentDisposition fileMetaData) {
    String out = "";
    Map<String, String> l = fileMetaData.getParameters();
    Collection<String> s = l.values();
    Iterator i = s.iterator();
    while(i.hasNext())
    {
        out += i.next()+"      ";
    }

退出; }

我收到此异常

严重：StandardWrapper.Throwable org.glassfish.jersey.server.model.ModelValidationException：应用程序初始化期间应用程序资源模型的验证失败。 [[FATAL]在索引0处找不到类型为public java.lang.String my.Service.getE（java.io.InputStream，org.glassfish.jersey.media.multipart.FormDataContentDisposition）的参数的注入源。 source ='ResourceMethod {httpMethod = POST，consumeTypes = [multipart / form-data]，generatedTypes = [text / plain]，suspended = false，suspendTimeout = 0，suspendTimeoutUnit = MILLISECONDS，invocable = Invocable {handler = ClassBasedMethodHandler {handlerClass = class my.Service，handlerConstructors = [org.glassfish.jersey.server.model.HandlerConstructor@4023c98]}，definitionMethod = public java.lang.String my.Service.getE（java.io.InputStream，org.glassfish.jersey.media .multipart.FormDataContentDisposition），parameters = [Parameter [type = class java.io.InputStream，source = file，defaultValue = null]，Parameter [type = class org.glassfish.jersey.media.multipart.FormDataContentDisposition，source = file， defaultValue = null]]，responseType = class java.lang.String}，nameBindings = []}']

依赖性

<dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>3.8.1</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.39</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey</groupId>
        <artifactId>jersey-bom</artifactId>
        <version>2.16</version>
        <type>pom</type>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet</artifactId>
        <version>2.16</version>
    </dependency>
<dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-moxy</artifactId>
        <version>2.17</version>
    </dependency>
    <dependency>
        <groupId>com.googlecode.json-simple</groupId>
        <artifactId>json-simple</artifactId>
        <version>1.1.1</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-multipart</artifactId>
        <version>2.16</version>
    </dependency>

我的服务类

@Path("empdata")

公共类服务{

EmpService service = new EmpService();
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
public String getE(@FormDataParam("file") InputStream inputStream,@FormDataParam("file") FormDataContentDisposition fileMetaData) {
    String out = "";
    Map<String, String> l = fileMetaData.getParameters();
    Collection<String> s = l.values();
    Iterator i = s.iterator();
    while(i.hasNext())
    {
        out += i.next()+"      ";
    }
    return out;//
}

}

我注册了我的ResourceConfig子类

this is how i am sending request and file this is how my request header and body part looks like 谢谢！

Answer 1

添加泽西多部分依赖性

要在Jersey应用程序中使用多部分功能，您需要将jersey-media-multipart模块添加到pom.xml文件中：

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-multipart</artifactId>
    <version>2.23.1</version>
</dependency>

如果您不使用Maven，请确保在类路径上具有所有必需的依赖项（请参阅jersey-media-multipart工件依赖项）。

注册多部分功能

除了添加依赖项外，您还需要注册MultiPartFeature。请参阅以下方法：

如果您有Application / ResourceConfig子类，请执行以下操作：

@ApplicationPath("/api")
public class MyApplication extends Application {

    @Override
    public Set<Class<?>> getClasses() {
        Set<Class<?>> classes = new HashSet<Class<?>>();
        classes.add(MultipartFeature.class);
        return classes;
    }
}

@ApplicationPath("/api")
public class MyApplication extends ResourceConfig {

    public MyApplication() {
        register(MultipartFeature.class);
    }
}

如果您没有Application / ResourceConfig子类，则可以在web.xml部署描述符中注册MultiPartFeature。可以在jersey.config.server.provider.classnames初始化参数的逗号分隔值中提供特定资源，提供程序和功能完全限定的类名。

<init-param>
    <param-name>jersey.config.server.provider.classnames</param-name>
    <param-value>org.glassfish.jersey.media.multipart.MultiPartFeature</param-value>
</init-param>

处理多部分请求

使用@FormDataParam注释将multipart/form-data请求实体主体的命名主体部分绑定到资源方法参数，如下所示：

@POST
@Path("/upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response upload(@FormDataParam("file") InputStream inputStream,
                       @FormDataParam("file") FormDataContentDisposition fileMetaData) {
    ...
}

有关详细信息，请查看Jersey documentation about multipart requests。