Java Spring - 處理圖片Multipart

• 處理multipart format的data
• 上傳文件，對應的部分可以是binary data

        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW
        Content-Disposition: form-data; name="firstName"
        Charles
        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW
        Content-Disposition: form-data; name="lastName"
        Xavier
        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW
        Content-Disposition: form-data; name="email"
        charles@xmen.com
        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW
        Content-Disposition: form-data; name="username"
        professorx
        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW
        Content-Disposition: form-data; name="password"
        letmein01
        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW
        Content-Disposition: form-data; name="profilePicture"; filename="me.jpg"
        Content-Type: image/jpeg
          [[ Binary image data goes here ]]
        ------WebKitFormBoundaryqgkaBn8IHJCuNmiW--

• 在處理文件上傳以前，必須要先配置一個multipart resolver，透過此來告知DispatcherServlet該如何讀取multipart request